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 can't devise you can't devise he can't devise we can't devise you can't devise they can't devise	I can't be devising you can't be devising he can't be devising we can't be devising you can't be devising they can't be devising
Perfect	V-ing perfect
I can't have devised you can't have devised he can't have devised we can't have devised you can't have devised they can't have devised	I can't have been devising you can't have been devising he can't have been devising we can't have been devising you can't have been devising they can't 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't I devise? can't you devise? can't he devise? can't we devise? can't you devise? can't they devise?	can't I be devising? can't you be devising? can't he be devising? can't we be devising? can't you be devising? can't they be devising?
Perfect	V-ing perfect
can't I have devised? can't you have devised? can't he have devised? can't we have devised? can't you have devised? can't they have devised?	can't I have been devising? can't you have been devising? can't he have been devising? can't we have been devising? can't you have been devising? can't they have been devising?