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