English verb conjugation
CAN SISE

Regular verb: sise - sised - sised

Affirmation

Simple form	V-ing form
I can sise you can sise he can sise we can sise you can sise they can sise	I can be sising you can be sising he can be sising we can be sising you can be sising they can be sising
Perfect	V-ing perfect
I can have sised you can have sised he can have sised we can have sised you can have sised they can have sised	I can have been sising you can have been sising he can have been sising we can have been sising you can have been sising they can have been sising

Negation

Simple form	V-ing form
I can't sise you can't sise he can't sise we can't sise you can't sise they can't sise	I can't be sising you can't be sising he can't be sising we can't be sising you can't be sising they can't be sising
Perfect	V-ing perfect
I can't have sised you can't have sised he can't have sised we can't have sised you can't have sised they can't have sised	I can't have been sising you can't have been sising he can't have been sising we can't have been sising you can't have been sising they can't have been sising

Interrogative form

Simple form	V-ing form
can I sise? can you sise? can he sise? can we sise? can you sise? can they sise?	can I be sising? can you be sising? can he be sising? can we be sising? can you be sising? can they be sising?
Perfect	V-ing perfect
can I have sised? can you have sised? can he have sised? can we have sised? can you have sised? can they have sised?	can I have been sising? can you have been sising? can he have been sising? can we have been sising? can you have been sising? can they have been sising?

Interro-negative form

Simple form	V-ing form
can't I sise? can't you sise? can't he sise? can't we sise? can't you sise? can't they sise?	can't I be sising? can't you be sising? can't he be sising? can't we be sising? can't you be sising? can't they be sising?
Perfect	V-ing perfect
can't I have sised? can't you have sised? can't he have sised? can't we have sised? can't you have sised? can't they have sised?	can't I have been sising? can't you have been sising? can't he have been sising? can't we have been sising? can't you have been sising? can't they have been sising?