I could realign you could realign he could realign we could realign you could realign they could realign
V-ing form
I could be realigning you could be realigning he could be realigning we could be realigning you could be realigning they could be realigning
Perfect
I could have realigned you could have realigned he could have realigned we could have realigned you could have realigned they could have realigned
V-ing perfect
I could have been realigning you could have been realigning he could have been realigning we could have been realigning you could have been realigning they could have been realigning
Negation
Simple form
I couldn't realign you couldn't realign he couldn't realign we couldn't realign you couldn't realign they couldn't realign
V-ing form
I couldn't be realigning you couldn't be realigning he couldn't be realigning we couldn't be realigning you couldn't be realigning they couldn't be realigning
Perfect
I couldn't have realigned you couldn't have realigned he couldn't have realigned we couldn't have realigned you couldn't have realigned they couldn't have realigned
V-ing perfect
I couldn't have been realigning you couldn't have been realigning he couldn't have been realigning we couldn't have been realigning you couldn't have been realigning they couldn't have been realigning
Interrogative form
Simple form
could I realign? could you realign? could he realign? could we realign? could you realign? could they realign?
V-ing form
could I be realigning? could you be realigning? could he be realigning? could we be realigning? could you be realigning? could they be realigning?
Perfect
could I have realigned? could you have realigned? could he have realigned? could we have realigned? could you have realigned? could they have realigned?
V-ing perfect
could I have been realigning? could you have been realigning? could he have been realigning? could we have been realigning? could you have been realigning? could they have been realigning?
Interro-negative form
Simple form
couldn't I realign? couldn't you realign? couldn't he realign? couldn't we realign? couldn't you realign? couldn't they realign?
V-ing form
couldn't I be realigning? couldn't you be realigning? couldn't he be realigning? couldn't we be realigning? couldn't you be realigning? couldn't they be realigning?
Perfect
couldn't I have realigned? couldn't you have realigned? couldn't he have realigned? couldn't we have realigned? couldn't you have realigned? couldn't they have realigned?
V-ing perfect
couldn't I have been realigning? couldn't you have been realigning? couldn't he have been realigning? couldn't we have been realigning? couldn't you have been realigning? couldn't they have been realigning?