Table:
Test of English as a Foreign Language

Acronym	TOEFL
Type	Internet-based or paper-based standardized test.
Administrator	Educational Testing Service
Skills tested	Reading, listening, speaking and writing of the English language.
Purpose	To assess the English language proficiency of non-native English speakers.
Year started	1964; 60 years ago (1964)
Duration	Internet-based test (iBT): 3 hours 10 minutes to 4 hours 20 minutes (excluding 10-minute break in-between).
Paper-based test (PBT): 2 hours 20 minutes to 2 hours 30 minutes.[1]
Score range	iBT:
0 to 30 (in 1 point increments) on each of the 4 sections. So total of 0 to 120.
PBT:
Listening: 31 to 68, Structure: 31 to 69, Reading: 31 to 67. Total of 310 to 677. Writing (separate): 0 to 6. (All in 1 point increments.)
Score validity	2 years
Offered	iBT: More than 50 times a year.[2]
Restrictions on attempts	iBT: Can be taken only once in any 12-day period.[3]
Regions	4,500 test centers in 165 countries.[2]
Languages	English
Annual number of test takers	2.3 million p.a
Prerequisites	No official prerequisite. Intended for non-native English speakers.
Fee	iBT: US$ 160 to US$ 260, depending on the country.[2]
PBT: US$ 180.[4]
Used by	More than 10,000 colleges, agencies and other institutions in over 130 countries.[5]
Website	www.ets.org/toefl

A merged cell in a table could be represented by the JSON {'top-left':(X1, Y1), 'bottom-right':(X2, Y2)}, where '(X1, Y1)' and '(X2, Y2)' signify the (row_id, column_id) of the top-left and bottom-right cells in the merged area. Using the shown table image, locate all merged cells and provide their coordinates in this format. Bear in mind that row and column IDs begin from 1.

This table does not contain any merged cells.