English verb conjugation
CAN DECODE

Regular verb: decode - decoded - decoded

Affirmation

Simple form	V-ing form
I can decode you can decode she can decode we can decode you can decode they can decode	I can be decoding you can be decoding she can be decoding we can be decoding you can be decoding they can be decoding
Perfect	V-ing perfect
I can have decoded you can have decoded she can have decoded we can have decoded you can have decoded they can have decoded	I can have been decoding you can have been decoding she can have been decoding we can have been decoding you can have been decoding they can have been decoding

Negation

Simple form	V-ing form
I cannot decode you cannot decode she cannot decode we cannot decode you cannot decode they cannot decode	I cannot be decoding you cannot be decoding she cannot be decoding we cannot be decoding you cannot be decoding they cannot be decoding
Perfect	V-ing perfect
I cannot have decoded you cannot have decoded she cannot have decoded we cannot have decoded you cannot have decoded they cannot have decoded	I cannot have been decoding you cannot have been decoding she cannot have been decoding we cannot have been decoding you cannot have been decoding they cannot have been decoding

Interrogative form

Simple form	V-ing form
can I decode? can you decode? can she decode? can we decode? can you decode? can they decode?	can I be decoding? can you be decoding? can she be decoding? can we be decoding? can you be decoding? can they be decoding?
Perfect	V-ing perfect
can I have decoded? can you have decoded? can she have decoded? can we have decoded? can you have decoded? can they have decoded?	can I have been decoding? can you have been decoding? can she have been decoding? can we have been decoding? can you have been decoding? can they have been decoding?

Interro-negative form

Simple form	V-ing form
can I not decode? can you not decode? can she not decode? can we not decode? can you not decode? can they not decode?	can I not be decoding? can you not be decoding? can she not be decoding? can we not be decoding? can you not be decoding? can they not be decoding?
Perfect	V-ing perfect
can I not have decoded? can you not have decoded? can she not have decoded? can we not have decoded? can you not have decoded? can they not have decoded?	can I not have been decoding? can you not have been decoding? can she not have been decoding? can we not have been decoding? can you not have been decoding? can they not have been decoding?