I can avalanche you can avalanche she can avalanche we can avalanche you can avalanche they can avalanche
V-ing form
I can be avalanching you can be avalanching she can be avalanching we can be avalanching you can be avalanching they can be avalanching
Perfect
I can have avalanched you can have avalanched she 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 she 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 she 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 she 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 she 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 she 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 she avalanche? can we avalanche? can you avalanche? can they avalanche?
V-ing form
can I be avalanching? can you be avalanching? can she be avalanching? can we be avalanching? can you be avalanching? can they be avalanching?
Perfect
can I have avalanched? can you have avalanched? can she 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 she 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 she 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 she 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 she 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 she have been avalanching? can't we have been avalanching? can't you have been avalanching? can't they have been avalanching?