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