From the following list, identify the index that contains only Persian characters and select the one that is more suitable based on content or length. The output should only be the numerical index.

List:
['```html\n<div>\n    <t t-set="colors" t-value="{\'needsAction\': \'grey\', \'accepted\': \'green\', \'tentative\': \'#FFFF00\', \'declined\': \'red\'}"></t>\n    <t t-set="is_online" t-value="\'appointment_type_id\' in object.event_id and object.event_id.appointment_type_id"></t>\n    <t t-set="recurrent" t-value="object.recurrence_id and not ctx.get(\'calendar_template_ignore_recurrence\')"></t>\n    <p>\n        سلام <t t-out="object.common_name or \'\'">مبلمان جمنی</t>,<br><br>\n        این یک یادآوری برای رویداد زیر است:\n    </p>\n    <div style="text-align: center; padding: 16px 0px 16px 0px;">\n        <a t-attf-href="/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/accept?token={{ object.access_token }}&amp;id={{ object.event_id.id }}" style="padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px">\n            پذیرش</a>\n        <a t-attf-href="/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/decline?token={{ object.access_token }}&amp;id={{ object.event_id.id }}" style="padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px">\n            رد کردن</a>\n        <a t-attf-href="/calendar/meeting/view?token={{ object.access_token }}&amp;id={{ object.event_id.id }}" style="padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px">\n            مشاهده</a>\n    </div>\n    <table border="0" cellpadding="0" cellspacing="0"><tr>\n        <td width="130px;" style="min-width: 130px;">\n            <div style="border-top-start-radius: 3px; border-top-end-radius: 3px; font-size: 12px; border-collapse: separate; text-align: center; font-weight: bold; color: #ffffff; min-height: 18px; background-color: #875A7B; border: 1px solid #875A7B;">\n                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format="EEEE", lang_code=object.env.lang) or ""\'>سه\u200cشنبه</t>\n            </div>\n            <div style="font-size: 48px; min-height: auto; font-weight: bold; text-align: center; color: #5F5F5F; background-color: #F8F8F8; border: 1px solid #875A7B;">\n                <t t-out="format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\'d\', lang_code=object.env.lang) or \'\'">۴</t>\n            </div>\n            <div style="font-size: 12px; text-align: center; font-weight: bold; color: #ffffff; background-color: #875A7B;">\n                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format="MMMM y", lang_code=object.env.lang) or ""\'>مه ۲۰۲۱</t>\n            </div>\n            <div style="border-collapse: separate; color: #5F5F5F; text-align: center; font-size: 12px; border-bottom-end-radius: 3px; font-weight: bold; border: 1px solid #875A7B; border-bottom-start-radius: 3px;">\n                <t t-if="not object.event_id.allday">\n                    <div>\n                        <t t-out=\'format_time(time=object.event_id.start, tz=object.mail_tz, time_format="short", lang_code=object.env.lang) or ""\'>۱۱:۰۰ صبح</t>\n                    </div>\n                    <t t-if="object.mail_tz">\n                        <div style="font-size: 10px; font-weight: normal">\n                            (<t t-out="object.mail_tz or \'\'">اروپا/بروکسل</', '```html\n<div>\\n"\n"    <t t-set=\\"colors\\" t-value=\\"{\'needsAction\': \'grey\', \'accepted\': \'green\', \'tentative\': \'#FFFF00\', \'declined\': \'red\'}\\"></t>\\n"\n"    <t t-set=\\"is_online\\" t-value=\\"\'appointment_type_id\' in object.event_id and object.event_id.appointment_type_id\\"></t>\\n"\n"    <t t-set=\\"recurrent\\" t-value=\\"object.recurrence_id and not ctx.get(\'calendar_template_ignore_recurrence\')\\"></t>\\n"\n"    <p>\\n"\n"        سلام <t t-out=\\"object.common_name or \'\'\\">مبلمان جمنای</t>,<br><br>\\n"\n"        این یک یادآوری برای رویداد زیر است:\\n"\n"    </p>\\n"\n"    <div style=\\"text-align: center; padding: 16px 0px 16px 0px;\\">\\n"\n"        <a t-attf-href=\\"/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/accept?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            پذیرش</a>\\n"\n"        <a t-attf-href=\\"/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/decline?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            رد</a>\\n"\n"        <a t-attf-href=\\"/calendar/meeting/view?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            مشاهده</a>\\n"\n"    </div>\\n"\n"    <table border=\\"0\\" cellpadding=\\"0\\" cellspacing=\\"0\\"><tr>\\n"\n"        <td width=\\"130px;\\" style=\\"min-width: 130px;\\">\\n"\n"            <div style=\\"border-top-start-radius: 3px; border-top-end-radius: 3px; font-size: 12px; border-collapse: separate; text-align: center; font-weight: bold; color: #ffffff; min-height: 18px; background-color: #875A7B; border: 1px solid #875A7B;\\">\\n"\n"                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\\"EEEE\\", lang_code=object.env.lang) or \\"\\"\'>سه\u200cشنبه</t>\\n"\n"            </div>\\n"\n"            <div style=\\"font-size: 48px; min-height: auto; font-weight: bold; text-align: center; color: #5F5F5F; background-color: #F8F8F8; border: 1px solid #875A7B;\\">\\n"\n"                <t t-out=\\"format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\'d\', lang_code=object.env.lang) or \'\'\\">4</t>\\n"\n"            </div>\\n"\n"            <div style=\\"font-size: 12px; text-align: center; font-weight: bold; color: #ffffff; background-color: #875A7B;\\">\\n"\n"                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\\"MMMM y\\", lang_code=object.env.lang) or \\"\\"\'>مه 2021</t>\\n"\n"            </div>\\n"\n"            <div style=\\"border-collapse: separate; color: #5F5F5F; text-align: center; font-size: 12px; border-bottom-end-radius: 3px; font-weight: bold; border: 1px solid #875A7B; border-bottom-start-radius: 3px;\\">\\n"\n"                <t t-if=\\"not object.event_id.allday\\">\\n"\n"', '"<div>\\n"\n"    <t t-set=\\"colors\\" t-value=\\"{\'needsAction\': \'grey\', \'accepted\': \'green\', \'tentative\': \'#FFFF00\', \'declined\': \'red\'}\\"></t>\\n"\n"    <t t-set=\\"is_online\\" t-value=\\"\'appointment_type_id\' in object.event_id and object.event_id.appointment_type_id\\"></t>\\n"\n"    <t t-set=\\"recurrent\\" t-value=\\"object.recurrence_id and not ctx.get(\'calendar_template_ignore_recurrence\')\\"></t>\\n"\n"    <p>\\n"\n"        سلام <t t-out=\\"object.common_name or \'\'\\">Gemini Furniture</t>،<br><br>\\n"\n"        این یادآوری برای رویداد زیر است:\\n"\n"    </p>\\n"\n"    <div style=\\"text-align: center; padding: 16px 0px 16px 0px;\\">\\n"\n"        <a t-attf-href=\\"/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/accept?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            قبول</a>\\n"\n"        <a t-attf-href=\\"/calendar/{{ \'recurrence\' if recurrent else \'meeting\' }}/decline?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            رد کنید</a>\\n"\n"        <a t-attf-href=\\"/calendar/meeting/view?token={{ object.access_token }}&amp;id={{ object.event_id.id }}\\" style=\\"padding: 5px 10px; color: #FFFFFF; text-decoration: none; background-color: #875A7B; border: 1px solid #875A7B; border-radius: 3px\\">\\n"\n"            مشاهده</a>\\n"\n"    </div>\\n"\n"    <table border=\\"0\\" cellpadding=\\"0\\" cellspacing=\\"0\\"><tr>\\n"\n"        <td width=\\"130px;\\" style=\\"min-width: 130px;\\">\\n"\n"            <div style=\\"border-top-start-radius: 3px; border-top-end-radius: 3px; font-size: 12px; border-collapse: separate; text-align: center; font-weight: bold; color: #ffffff; min-height: 18px; background-color: #875A7B; border: 1px solid #875A7B;\\">\\n"\n"                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\\"EEEE\\", lang_code=object.env.lang) or \\"\\"\'>سه شنبه</t>\\n"\n"            </div>\\n"\n"            <div style=\\"font-size: 48px; min-height: auto; font-weight: bold; text-align: center; color: #5F5F5F; background-color: #F8F8F8; border: 1px solid #875A7B;\\">\\n"\n"                <t t-out=\\"format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\'d\', lang_code=object.env.lang) or \'\'\\">4</t>\\n"\n"            </div>\\n"\n"            <div style=\\"font-size: 12px; text-align: center; font-weight: bold; color: #ffffff; background-color: #875A7B;\\">\\n"\n"                <t t-out=\'format_datetime(dt=object.event_id.start, tz=object.mail_tz if not object.event_id.allday else None, dt_format=\\"MMMM y\\", lang_code=object.env.lang) or \\"\\"\'>May 2021</t>\\n"\n"            </div>\\n"\n"            <div style=\\"border-collapse: separate; color: #5F5F5F; text-align: center; font-size: 12px; border-bottom-end-radius: 3px; font-weight: bold; border: 1px solid #875A7B; border-bottom-start-radius: 3px;\\">\\n"\n"                <t t-if=\\"not object.event_id.allday\\">\\n"\n"                    <div>\\n"\n"                        <t t-out=\'format_time(time=object.event_id.start, tz=object.mail_tz, time_format=\\"short\\", lang_code=object.env.lang) or \\"\\"\'>11:00 AM</t>\\n"\n"                    </div>\\n"\n"                    <t t-if=\\"object.mail_tz\\">\\n"\n"                        <div style=\\"font-size: 10px; font-weight: normal\\">\\n"\n"                            (<t t-out=\\"object.mail_tz or \'\'\\">Europe/Brussels</t>)\\n"\n"                        </div>\\n"\n"                    </t>\\n"\n"                </t>\\n"\n"            </div>\\n"\n"        </td>\\n"\n"        <td width=\\"20px;\\"></td>\\n"\n"        <td style=\\"padding-top: 5px;\\">\\n"\n"            <p><strong>جزئیات رویداد</strong></p>\\n"\n"            <ul>\\n"\n"                <t t-if=\\"object.event_id.location\\">\\n"\n"                    <li>مکان: <t t-out=\\"object.event_id.location or \'\'\\">Bruxelles</t>\\n"\n"                        <a target=\\"_blank\\" t-if=\\"not is_online or is_online and object.event_id.location != object.event_id.appointment_type_id.location_id.name\\" t-attf-href=\\"http://maps.google.com/maps?oi=map&amp;q={{object.event_id.location}}\\">(مشاهده نقشه)</a>\\n"\n"                    </li>\\n"\n"                </t>\\n"\n"                <t t-if=\\"recurrent\\">\\n"\n"                    <li>زمان: <t t-out=\\"object.recurrence_id.get_recurrence_name()\\">هر 1 هفته، برای 3 رویداد</t>\\n"\n"                </t>\\n"\n"                <t t-if=\\"not object.event_id.allday and object.event_id.duration\\">\\n"\n"                    <li>مدت: <t t-out=\\"(\'%dH%02d\' % (object.event_id.duration,round(object.event_id.duration*60)%60)) or \'\'\\">0H30</t></li>\\n"\n"                </t>\\n"\n"                <li>شرکت\u200cکنندگان\\n"\n"                <ul>\\n"\n"                    <li t-foreach=\\"object.event_id.attendee_ids\\" t-as=\\"attendee\\">\\n"\n"                        <div t-attf-style=\\"display: inline-block; border-radius: 50%; width: 10px; height: 10px; background:{{ colors.get(attendee.state) or \'white\' }};\\"> </div>\\n"\n"                        <t t-if=\\"attendee.common_name != object.common_name\\">\\n"\n"                            <span style=\\"margin-left:5px\\" t-out=\\"attendee.common_name or \'\'\\">Mitchell Admin</span>\\n"\n"                        </t>\\n"\n"                        <t t-else=\\"\\">\\n"\n"                            <span style=\\"margin-left:5px\\">شما</span>\\n"\n"                        </t>\\n"\n"                    </li>\\n"\n"                </ul></li>\\n"\n"                <t t-if=\\"object.event_id.videocall_location\\">\\n"\n"                    <']