The babies develop inside the mother for about 12 days, and are born naked and helpless, with only enough instinct and ability to drag their way towards the pouch and attach to one of the 13 teats inside.
(The babies; develop; L:inside the mother; T:for about 12 days) (The babies; are born; naked and helpless)
The babies The babies
develop are born
L:inside the mother T:for about 12 days
naked and helpless