to stem
Regular verb: stem - stemmed- stemmed

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I stem
you stem
she stems
we stem
you stem
they stem 	I'mstemming
you'restemming
she'sstemming
we'restemming
you'restemming
they'restemming	I stemmed
you stemmed
she stemmed
we stemmed
you stemmed
they stemmed	Iwasstemming
youwerestemming
shewasstemming
wewerestemming
youwerestemming
theywerestemming	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've stemmed
you've stemmed
she's stemmed
we've stemmed
you've stemmed
they've stemmed	I'vebeen stemming
you'vebeen stemming
she'sbeen stemming
we'vebeen stemming
you'vebeen stemming
they'vebeen stemming	I'd stemmed
you'd stemmed
she'd stemmed
we'd stemmed
you'd stemmed
they'd stemmed	I'd been stemming
you'd been stemming
she'd been stemming
we'd been stemming
you'd been stemming
they'd been stemming	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll stem
you'll stem
she'll stem
we'll stem
you'll stem
they'll stem 	I'll be stemming
you'll be stemming
she'll be stemming
we'll be stemming
you'll be stemming
they'll be stemming	I'll have stemmed
you'll have stemmed
she'll have stemmed
we'll have stemmed
you'll have stemmed
they'll have stemmed	I'll have been stemming
you'll have been stemming
she'll have been stemming
we'll have been stemming
you'll have been stemming
they'll have been stemming	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd stem
you'd stem
she'd stem
we'd stem
you'd stem
they'd stem 	I'd be stemming
you'd be stemming
she'd be stemming
we'd be stemming
you'd be stemming
they'd be stemming	I'd have stemmed
you'd have stemmed
she'd have stemmed
we'd have stemmed
you'd have stemmed
they'd have stemmed	I'd have been stemming
you'd have been stemming
she'd have been stemming
we'd have been stemming
you'd have been stemming
they'd have been stemming	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to stem 	 	stem
Let's stem
stem 	 	

Participle 	
Present 	Past 	 	 	
stemming	stemmed