I can synthesize you can synthesize he can synthesize we can synthesize you can synthesize they can synthesize
V-ing form
I can be synthesizing you can be synthesizing he can be synthesizing we can be synthesizing you can be synthesizing they can be synthesizing
Perfect
I can have synthesized you can have synthesized he can have synthesized we can have synthesized you can have synthesized they can have synthesized
V-ing perfect
I can have been synthesizing you can have been synthesizing he can have been synthesizing we can have been synthesizing you can have been synthesizing they can have been synthesizing
Negation
Simple form
I can't synthesize you can't synthesize he can't synthesize we can't synthesize you can't synthesize they can't synthesize
V-ing form
I can't be synthesizing you can't be synthesizing he can't be synthesizing we can't be synthesizing you can't be synthesizing they can't be synthesizing
Perfect
I can't have synthesized you can't have synthesized he can't have synthesized we can't have synthesized you can't have synthesized they can't have synthesized
V-ing perfect
I can't have been synthesizing you can't have been synthesizing he can't have been synthesizing we can't have been synthesizing you can't have been synthesizing they can't have been synthesizing
Interrogative form
Simple form
can I synthesize? can you synthesize? can he synthesize? can we synthesize? can you synthesize? can they synthesize?
V-ing form
can I be synthesizing? can you be synthesizing? can he be synthesizing? can we be synthesizing? can you be synthesizing? can they be synthesizing?
Perfect
can I have synthesized? can you have synthesized? can he have synthesized? can we have synthesized? can you have synthesized? can they have synthesized?
V-ing perfect
can I have been synthesizing? can you have been synthesizing? can he have been synthesizing? can we have been synthesizing? can you have been synthesizing? can they have been synthesizing?
Interro-negative form
Simple form
can't I synthesize? can't you synthesize? can't he synthesize? can't we synthesize? can't you synthesize? can't they synthesize?
V-ing form
can't I be synthesizing? can't you be synthesizing? can't he be synthesizing? can't we be synthesizing? can't you be synthesizing? can't they be synthesizing?
Perfect
can't I have synthesized? can't you have synthesized? can't he have synthesized? can't we have synthesized? can't you have synthesized? can't they have synthesized?
V-ing perfect
can't I have been synthesizing? can't you have been synthesizing? can't he have been synthesizing? can't we have been synthesizing? can't you have been synthesizing? can't they have been synthesizing?