I can tile you can tile she can tile we can tile you can tile they can tile
V-ing form
I can be tiling you can be tiling she can be tiling we can be tiling you can be tiling they can be tiling
Perfect
I can have tiled you can have tiled she can have tiled we can have tiled you can have tiled they can have tiled
V-ing perfect
I can have been tiling you can have been tiling she can have been tiling we can have been tiling you can have been tiling they can have been tiling
Negation
Simple form
I cannot tile you cannot tile she cannot tile we cannot tile you cannot tile they cannot tile
V-ing form
I cannot be tiling you cannot be tiling she cannot be tiling we cannot be tiling you cannot be tiling they cannot be tiling
Perfect
I cannot have tiled you cannot have tiled she cannot have tiled we cannot have tiled you cannot have tiled they cannot have tiled
V-ing perfect
I cannot have been tiling you cannot have been tiling she cannot have been tiling we cannot have been tiling you cannot have been tiling they cannot have been tiling
Interrogative form
Simple form
can I tile? can you tile? can she tile? can we tile? can you tile? can they tile?
V-ing form
can I be tiling? can you be tiling? can she be tiling? can we be tiling? can you be tiling? can they be tiling?
Perfect
can I have tiled? can you have tiled? can she have tiled? can we have tiled? can you have tiled? can they have tiled?
V-ing perfect
can I have been tiling? can you have been tiling? can she have been tiling? can we have been tiling? can you have been tiling? can they have been tiling?
Interro-negative form
Simple form
can I not tile? can you not tile? can she not tile? can we not tile? can you not tile? can they not tile?
V-ing form
can I not be tiling? can you not be tiling? can she not be tiling? can we not be tiling? can you not be tiling? can they not be tiling?
Perfect
can I not have tiled? can you not have tiled? can she not have tiled? can we not have tiled? can you not have tiled? can they not have tiled?
V-ing perfect
can I not have been tiling? can you not have been tiling? can she not have been tiling? can we not have been tiling? can you not have been tiling? can they not have been tiling?