could mull
Regular verb: mull - mulled- mulled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mull
you could mull
she could mull
we could mull
you could mull
they could mull 	I could be mulling
you could be mulling
she could be mulling
we could be mulling
you could be mulling
they could be mulling	I could have mulled
you could have mulled
she could have mulled
we could have mulled
you could have mulled
they could have mulled	I could have been mulling
you could have been mulling
she could have been mulling
we could have been mulling
you could have been mulling
they could have been mulling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't mull
you couldn't mull
she couldn't mull
we couldn't mull
you couldn't mull
they couldn't mull 	I couldn't be mulling
you couldn't be mulling
she couldn't be mulling
we couldn't be mulling
you couldn't be mulling
they couldn't be mulling	I couldn't have mulled
you couldn't have mulled
she couldn't have mulled
we couldn't have mulled
you couldn't have mulled
they couldn't have mulled	I couldn't have been mulling
you couldn't have been mulling
she couldn't have been mulling
we couldn't have been mulling
you couldn't have been mulling
they couldn't have been mulling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mull?
could you mull?
could she mull?
could we mull?
could you mull?
could they mull? 	could I be mulling?
could you be mulling?
could she be mulling?
could we be mulling?
could you be mulling?
could they be mulling? 	could I have mulled?
could you have mulled?
could she have mulled?
could we have mulled?
could you have mulled?
could they have mulled? 	could I have been mulling?
could you have been mulling?
could she have been mulling?
could we have been mulling?
could you have been mulling?
could they have been mulling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I mull?
couldn't you mull?
couldn't she mull?
couldn't we mull?
couldn't you mull?
couldn't they mull? 	couldn't I be mulling?
couldn't you be mulling?
couldn't she be mulling?
couldn't we be mulling?
couldn't you be mulling?
couldn't they be mulling? 	couldn't I have mulled?
couldn't you have mulled?
couldn't she have mulled?
couldn't we have mulled?
couldn't you have mulled?
couldn't they have mulled? 	couldn't I have been mulling?
couldn't you have been mulling?
couldn't she have been mulling?
couldn't we have been mulling?
couldn't you have been mulling?
couldn't they have been mulling?