English verb conjugation
CAN TIP

Regular verb: tip - tipped - tipped

Affirmation

Simple form	V-ing form
I can tip you can tip she can tip we can tip you can tip they can tip	I can be tipping you can be tipping she can be tipping we can be tipping you can be tipping they can be tipping
Perfect	V-ing perfect
I can have tipped you can have tipped she can have tipped we can have tipped you can have tipped they can have tipped	I can have been tipping you can have been tipping she can have been tipping we can have been tipping you can have been tipping they can have been tipping

Negation

Simple form	V-ing form
I can't tip you can't tip she can't tip we can't tip you can't tip they can't tip	I can't be tipping you can't be tipping she can't be tipping we can't be tipping you can't be tipping they can't be tipping
Perfect	V-ing perfect
I can't have tipped you can't have tipped she can't have tipped we can't have tipped you can't have tipped they can't have tipped	I can't have been tipping you can't have been tipping she can't have been tipping we can't have been tipping you can't have been tipping they can't have been tipping

Interrogative form

Simple form	V-ing form
can I tip? can you tip? can she tip? can we tip? can you tip? can they tip?	can I be tipping? can you be tipping? can she be tipping? can we be tipping? can you be tipping? can they be tipping?
Perfect	V-ing perfect
can I have tipped? can you have tipped? can she have tipped? can we have tipped? can you have tipped? can they have tipped?	can I have been tipping? can you have been tipping? can she have been tipping? can we have been tipping? can you have been tipping? can they have been tipping?

Interro-negative form

Simple form	V-ing form
can't I tip? can't you tip? can't she tip? can't we tip? can't you tip? can't they tip?	can't I be tipping? can't you be tipping? can't she be tipping? can't we be tipping? can't you be tipping? can't they be tipping?
Perfect	V-ing perfect
can't I have tipped? can't you have tipped? can't she have tipped? can't we have tipped? can't you have tipped? can't they have tipped?	can't I have been tipping? can't you have been tipping? can't she have been tipping? can't we have been tipping? can't you have been tipping? can't they have been tipping?