I could streamline you could streamline she could streamline we could streamline you could streamline they could streamline
V-ing form
I could be streamlining you could be streamlining she could be streamlining we could be streamlining you could be streamlining they could be streamlining
Perfect
I could have streamlined you could have streamlined she could have streamlined we could have streamlined you could have streamlined they could have streamlined
V-ing perfect
I could have been streamlining you could have been streamlining she could have been streamlining we could have been streamlining you could have been streamlining they could have been streamlining
Negation
Simple form
I could not streamline you could not streamline she could not streamline we could not streamline you could not streamline they could not streamline
V-ing form
I could not be streamlining you could not be streamlining she could not be streamlining we could not be streamlining you could not be streamlining they could not be streamlining
Perfect
I could not have streamlined you could not have streamlined she could not have streamlined we could not have streamlined you could not have streamlined they could not have streamlined
V-ing perfect
I could not have been streamlining you could not have been streamlining she could not have been streamlining we could not have been streamlining you could not have been streamlining they could not have been streamlining
Interrogative form
Simple form
could I streamline? could you streamline? could she streamline? could we streamline? could you streamline? could they streamline?
V-ing form
could I be streamlining? could you be streamlining? could she be streamlining? could we be streamlining? could you be streamlining? could they be streamlining?
Perfect
could I have streamlined? could you have streamlined? could she have streamlined? could we have streamlined? could you have streamlined? could they have streamlined?
V-ing perfect
could I have been streamlining? could you have been streamlining? could she have been streamlining? could we have been streamlining? could you have been streamlining? could they have been streamlining?
Interro-negative form
Simple form
could I not streamline? could you not streamline? could she not streamline? could we not streamline? could you not streamline? could they not streamline?
V-ing form
could I not be streamlining? could you not be streamlining? could she not be streamlining? could we not be streamlining? could you not be streamlining? could they not be streamlining?
Perfect
could I not have streamlined? could you not have streamlined? could she not have streamlined? could we not have streamlined? could you not have streamlined? could they not have streamlined?
V-ing perfect
could I not have been streamlining? could you not have been streamlining? could she not have been streamlining? could we not have been streamlining? could you not have been streamlining? could they not have been streamlining?