I could scorch you could scorch she could scorch we could scorch you could scorch they could scorch
V-ing form
I could be scorching you could be scorching she could be scorching we could be scorching you could be scorching they could be scorching
Perfect
I could have scorched you could have scorched she could have scorched we could have scorched you could have scorched they could have scorched
V-ing perfect
I could have been scorching you could have been scorching she could have been scorching we could have been scorching you could have been scorching they could have been scorching
Negation
Simple form
I couldn't scorch you couldn't scorch she couldn't scorch we couldn't scorch you couldn't scorch they couldn't scorch
V-ing form
I couldn't be scorching you couldn't be scorching she couldn't be scorching we couldn't be scorching you couldn't be scorching they couldn't be scorching
Perfect
I couldn't have scorched you couldn't have scorched she couldn't have scorched we couldn't have scorched you couldn't have scorched they couldn't have scorched
V-ing perfect
I couldn't have been scorching you couldn't have been scorching she couldn't have been scorching we couldn't have been scorching you couldn't have been scorching they couldn't have been scorching
Interrogative form
Simple form
could I scorch? could you scorch? could she scorch? could we scorch? could you scorch? could they scorch?
V-ing form
could I be scorching? could you be scorching? could she be scorching? could we be scorching? could you be scorching? could they be scorching?
Perfect
could I have scorched? could you have scorched? could she have scorched? could we have scorched? could you have scorched? could they have scorched?
V-ing perfect
could I have been scorching? could you have been scorching? could she have been scorching? could we have been scorching? could you have been scorching? could they have been scorching?
Interro-negative form
Simple form
couldn't I scorch? couldn't you scorch? couldn't she scorch? couldn't we scorch? couldn't you scorch? couldn't they scorch?
V-ing form
couldn't I be scorching? couldn't you be scorching? couldn't she be scorching? couldn't we be scorching? couldn't you be scorching? couldn't they be scorching?
Perfect
couldn't I have scorched? couldn't you have scorched? couldn't she have scorched? couldn't we have scorched? couldn't you have scorched? couldn't they have scorched?
V-ing perfect
couldn't I have been scorching? couldn't you have been scorching? couldn't she have been scorching? couldn't we have been scorching? couldn't you have been scorching? couldn't they have been scorching?