Which number grouping is a valid IPv$6$ address?

$12$aa: $1298$:$1200$:$129$b

$1234$:$1230$: $1238$: $1299$:$1000$::

$2001$:$0$db$8$:$3$c$55$:$0015$:$1010$:$0000$:abcd:ff$13$

$1610$:$1100$:$2001$:$2900$: ab$11$: $1102$:$0000\mathrm{.}2900$