English verb conjugation
COULD DEOXIDISE

Regular verb: deoxidise - deoxidised - deoxidised

Affirmation

Simple form	V-ing form
I could deoxidise you could deoxidise he could deoxidise we could deoxidise you could deoxidise they could deoxidise	I could be deoxidising you could be deoxidising he could be deoxidising we could be deoxidising you could be deoxidising they could be deoxidising
Perfect	V-ing perfect
I could have deoxidised you could have deoxidised he could have deoxidised we could have deoxidised you could have deoxidised they could have deoxidised	I could have been deoxidising you could have been deoxidising he could have been deoxidising we could have been deoxidising you could have been deoxidising they could have been deoxidising

Negation

Simple form	V-ing form
I couldn't deoxidise you couldn't deoxidise he couldn't deoxidise we couldn't deoxidise you couldn't deoxidise they couldn't deoxidise	I couldn't be deoxidising you couldn't be deoxidising he couldn't be deoxidising we couldn't be deoxidising you couldn't be deoxidising they couldn't be deoxidising
Perfect	V-ing perfect
I couldn't have deoxidised you couldn't have deoxidised he couldn't have deoxidised we couldn't have deoxidised you couldn't have deoxidised they couldn't have deoxidised	I couldn't have been deoxidising you couldn't have been deoxidising he couldn't have been deoxidising we couldn't have been deoxidising you couldn't have been deoxidising they couldn't have been deoxidising

Interrogative form

Simple form	V-ing form
could I deoxidise? could you deoxidise? could he deoxidise? could we deoxidise? could you deoxidise? could they deoxidise?	could I be deoxidising? could you be deoxidising? could he be deoxidising? could we be deoxidising? could you be deoxidising? could they be deoxidising?
Perfect	V-ing perfect
could I have deoxidised? could you have deoxidised? could he have deoxidised? could we have deoxidised? could you have deoxidised? could they have deoxidised?	could I have been deoxidising? could you have been deoxidising? could he have been deoxidising? could we have been deoxidising? could you have been deoxidising? could they have been deoxidising?

Interro-negative form

Simple form	V-ing form
couldn't I deoxidise? couldn't you deoxidise? couldn't he deoxidise? couldn't we deoxidise? couldn't you deoxidise? couldn't they deoxidise?	couldn't I be deoxidising? couldn't you be deoxidising? couldn't he be deoxidising? couldn't we be deoxidising? couldn't you be deoxidising? couldn't they be deoxidising?
Perfect	V-ing perfect
couldn't I have deoxidised? couldn't you have deoxidised? couldn't he have deoxidised? couldn't we have deoxidised? couldn't you have deoxidised? couldn't they have deoxidised?	couldn't I have been deoxidising? couldn't you have been deoxidising? couldn't he have been deoxidising? couldn't we have been deoxidising? couldn't you have been deoxidising? couldn't they have been deoxidising?