English verb conjugation
CAN DEVISE

Regular verb: devise - devised - devised

Affirmation

Simple form	V-ing form
I can devise you can devise he can devise we can devise you can devise they can devise	I can be devising you can be devising he can be devising we can be devising you can be devising they can be devising
Perfect	V-ing perfect
I can have devised you can have devised he can have devised we can have devised you can have devised they can have devised	I can have been devising you can have been devising he can have been devising we can have been devising you can have been devising they can have been devising

Negation

Simple form	V-ing form
I cannot devise you cannot devise he cannot devise we cannot devise you cannot devise they cannot devise	I cannot be devising you cannot be devising he cannot be devising we cannot be devising you cannot be devising they cannot be devising
Perfect	V-ing perfect
I cannot have devised you cannot have devised he cannot have devised we cannot have devised you cannot have devised they cannot have devised	I cannot have been devising you cannot have been devising he cannot have been devising we cannot have been devising you cannot have been devising they cannot have been devising

Interrogative form

Simple form	V-ing form
can I devise? can you devise? can he devise? can we devise? can you devise? can they devise?	can I be devising? can you be devising? can he be devising? can we be devising? can you be devising? can they be devising?
Perfect	V-ing perfect
can I have devised? can you have devised? can he have devised? can we have devised? can you have devised? can they have devised?	can I have been devising? can you have been devising? can he have been devising? can we have been devising? can you have been devising? can they have been devising?

Interro-negative form

Simple form	V-ing form
can I not devise? can you not devise? can he not devise? can we not devise? can you not devise? can they not devise?	can I not be devising? can you not be devising? can he not be devising? can we not be devising? can you not be devising? can they not be devising?
Perfect	V-ing perfect
can I not have devised? can you not have devised? can he not have devised? can we not have devised? can you not have devised? can they not have devised?	can I not have been devising? can you not have been devising? can he not have been devising? can we not have been devising? can you not have been devising? can they not have been devising?