Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can ski ski you can ski ski she can ski ski we can ski ski you can ski ski they can ski ski
V-ing form
I can be ski skiing you can be ski skiing she can be ski skiing we can be ski skiing you can be ski skiing they can be ski skiing
Perfect
I can have ski skied you can have ski skied she can have ski skied we can have ski skied you can have ski skied they can have ski skied
V-ing perfect
I can have been ski skiing you can have been ski skiing she can have been ski skiing we can have been ski skiing you can have been ski skiing they can have been ski skiing
Negation
Simple form
I can't ski ski you can't ski ski she can't ski ski we can't ski ski you can't ski ski they can't ski ski
V-ing form
I can't be ski skiing you can't be ski skiing she can't be ski skiing we can't be ski skiing you can't be ski skiing they can't be ski skiing
Perfect
I can't have ski skied you can't have ski skied she can't have ski skied we can't have ski skied you can't have ski skied they can't have ski skied
V-ing perfect
I can't have been ski skiing you can't have been ski skiing she can't have been ski skiing we can't have been ski skiing you can't have been ski skiing they can't have been ski skiing
Interrogative form
Simple form
can I ski ski? can you ski ski? can she ski ski? can we ski ski? can you ski ski? can they ski ski?
V-ing form
can I be ski skiing? can you be ski skiing? can she be ski skiing? can we be ski skiing? can you be ski skiing? can they be ski skiing?
Perfect
can I have ski skied? can you have ski skied? can she have ski skied? can we have ski skied? can you have ski skied? can they have ski skied?
V-ing perfect
can I have been ski skiing? can you have been ski skiing? can she have been ski skiing? can we have been ski skiing? can you have been ski skiing? can they have been ski skiing?
Interro-negative form
Simple form
can't I ski ski? can't you ski ski? can't she ski ski? can't we ski ski? can't you ski ski? can't they ski ski?
V-ing form
can't I be ski skiing? can't you be ski skiing? can't she be ski skiing? can't we be ski skiing? can't you be ski skiing? can't they be ski skiing?
Perfect
can't I have ski skied? can't you have ski skied? can't she have ski skied? can't we have ski skied? can't you have ski skied? can't they have ski skied?
V-ing perfect
can't I have been ski skiing? can't you have been ski skiing? can't she have been ski skiing? can't we have been ski skiing? can't you have been ski skiing? can't they have been ski skiing?