Imperfect Deponent Subjunctive Song (He’s Got the Whole World in His Hands)
The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).

Cum cōnārer – “When I was trying…”
Cum cōnārēris – “When you were trying…”
Cum cōnārētur – “When he was trying…”
Imperfect deponent subjunctive! Cum cōnārēmur – “When we were trying…”
Cum cōnārēminī – “When ye were trying…”
Cum cōnārentur  – “When they were trying…”
Imperfect deponent subjunctive!

The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).

Cum verērer – “When I was fearing…”
Cum verērēris – “When you were fearing…”
Cum verērētur – “When he was fearing…”
Imperfect deponent subjunctive! Cum verērēmur – “When we were fearing…”
Cum verērēminī – “When ye were fearing…”
Cum verērentur – “When they were fearing…”
Imperfect deponent subjunctive!

The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).

Cum ūterer – “When I was using…”
Cum ūterēris – “When you were using…”
Cum ūterētur – “When he was using…”
Imperfect deponent subjunctive! Cum ūterēmur – “When we were using…”
Cum ūterēminī – “When ye were using…”
Cum ūterentur – “When they were using…”
Imperfect deponent subjunctive!

The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).

Cum paterer – “When I was suffering…”
Cum paterēris – “When you were suffering…”
Cum paterētur – “When he was suffering…”
Imperfect deponent subjunctive!
Cum paterēmur – “When we were suffering…”
Cum paterēminī – “When ye were suffering…”
Cum paterentur – “When they were suffering…”
Imperfect deponent subjunctive!

The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).

Cum partīrer – “When I was sharing…”
Cum partīrēris – “When you were sharing…”
Cum partīrētur – “When he was sharing,..”
Imperfect deponent subjunctive! Cum partīrēmur – “When we were sharing…”
Cum partīrēminī – “When ye were sharing…”
Cum partīrentur – “When they were sharing…”
Imperfect deponent subjunctive!

The imperfect subjunctive takes the present stem,
Adds -re and the endings, so the deponent ends
With -rer, -rēris, -rētur, -rēmur, -rēminī, -rentur.
Historical sequence (just in case you’re unsure).