I can fatigue you can fatigue he can fatigue we can fatigue you can fatigue they can fatigue
V-ing form
I can be fatiguing you can be fatiguing he can be fatiguing we can be fatiguing you can be fatiguing they can be fatiguing
Perfect
I can have fatigued you can have fatigued he can have fatigued we can have fatigued you can have fatigued they can have fatigued
V-ing perfect
I can have been fatiguing you can have been fatiguing he can have been fatiguing we can have been fatiguing you can have been fatiguing they can have been fatiguing
Negation
Simple form
I can't fatigue you can't fatigue he can't fatigue we can't fatigue you can't fatigue they can't fatigue
V-ing form
I can't be fatiguing you can't be fatiguing he can't be fatiguing we can't be fatiguing you can't be fatiguing they can't be fatiguing
Perfect
I can't have fatigued you can't have fatigued he can't have fatigued we can't have fatigued you can't have fatigued they can't have fatigued
V-ing perfect
I can't have been fatiguing you can't have been fatiguing he can't have been fatiguing we can't have been fatiguing you can't have been fatiguing they can't have been fatiguing
Interrogative form
Simple form
can I fatigue? can you fatigue? can he fatigue? can we fatigue? can you fatigue? can they fatigue?
V-ing form
can I be fatiguing? can you be fatiguing? can he be fatiguing? can we be fatiguing? can you be fatiguing? can they be fatiguing?
Perfect
can I have fatigued? can you have fatigued? can he have fatigued? can we have fatigued? can you have fatigued? can they have fatigued?
V-ing perfect
can I have been fatiguing? can you have been fatiguing? can he have been fatiguing? can we have been fatiguing? can you have been fatiguing? can they have been fatiguing?
Interro-negative form
Simple form
can't I fatigue? can't you fatigue? can't he fatigue? can't we fatigue? can't you fatigue? can't they fatigue?
V-ing form
can't I be fatiguing? can't you be fatiguing? can't he be fatiguing? can't we be fatiguing? can't you be fatiguing? can't they be fatiguing?
Perfect
can't I have fatigued? can't you have fatigued? can't he have fatigued? can't we have fatigued? can't you have fatigued? can't they have fatigued?
V-ing perfect
can't I have been fatiguing? can't you have been fatiguing? can't he have been fatiguing? can't we have been fatiguing? can't you have been fatiguing? can't they have been fatiguing?