I didn’t believe- YIBL
I didn’t believe so- YIBLS
I didn’t care- YIK
I didn’t ever- YIFR
I didn’t feel- YIFL
I didin’t find- YIFND
I didn’t go- YIG
I didn’t have- YIF
I didn’t imagine- YIJ
I didn’t know- YIN
I didn’t like- YIBLG
I didn’t mean- YIM
I didn’t observe- YIFRB
I didn’t recall- YIRL
I didn’t recognize- YIRKZ
I didn’t recollect- YIRK
I didn’t remember- YIRM
I didn’t say- YAOIS [SIDEBAR: I use this brief because I use YIS as the suffix -ies.]
I didn’t see- YIZ
I didn’t tell- YIT
I didn’t think- YING
I didn’t think so- YINGS
I didn’t understand- YINDZ
I didn’t want- YIPT