I can avalanche you can avalanche he can avalanche we can avalanche you can avalanche they can avalanche
V-ing form
I can be avalanching you can be avalanching he can be avalanching we can be avalanching you can be avalanching they can be avalanching
Perfect
I can have avalanched you can have avalanched he can have avalanched we can have avalanched you can have avalanched they can have avalanched
V-ing perfect
I can have been avalanching you can have been avalanching he can have been avalanching we can have been avalanching you can have been avalanching they can have been avalanching
Negation
Simple form
I can't avalanche you can't avalanche he can't avalanche we can't avalanche you can't avalanche they can't avalanche
V-ing form
I can't be avalanching you can't be avalanching he can't be avalanching we can't be avalanching you can't be avalanching they can't be avalanching
Perfect
I can't have avalanched you can't have avalanched he can't have avalanched we can't have avalanched you can't have avalanched they can't have avalanched
V-ing perfect
I can't have been avalanching you can't have been avalanching he can't have been avalanching we can't have been avalanching you can't have been avalanching they can't have been avalanching
Interrogative form
Simple form
can I avalanche? can you avalanche? can he avalanche? can we avalanche? can you avalanche? can they avalanche?
V-ing form
can I be avalanching? can you be avalanching? can he be avalanching? can we be avalanching? can you be avalanching? can they be avalanching?
Perfect
can I have avalanched? can you have avalanched? can he have avalanched? can we have avalanched? can you have avalanched? can they have avalanched?
V-ing perfect
can I have been avalanching? can you have been avalanching? can he have been avalanching? can we have been avalanching? can you have been avalanching? can they have been avalanching?
Interro-negative form
Simple form
can't I avalanche? can't you avalanche? can't he avalanche? can't we avalanche? can't you avalanche? can't they avalanche?
V-ing form
can't I be avalanching? can't you be avalanching? can't he be avalanching? can't we be avalanching? can't you be avalanching? can't they be avalanching?
Perfect
can't I have avalanched? can't you have avalanched? can't he have avalanched? can't we have avalanched? can't you have avalanched? can't they have avalanched?
V-ing perfect
can't I have been avalanching? can't you have been avalanching? can't he have been avalanching? can't we have been avalanching? can't you have been avalanching? can't they have been avalanching?