I could orient you could orient he could orient we could orient you could orient they could orient
V-ing form
I could be orienting you could be orienting he could be orienting we could be orienting you could be orienting they could be orienting
Perfect
I could have oriented you could have oriented he could have oriented we could have oriented you could have oriented they could have oriented
V-ing perfect
I could have been orienting you could have been orienting he could have been orienting we could have been orienting you could have been orienting they could have been orienting
Negation
Simple form
I couldn't orient you couldn't orient he couldn't orient we couldn't orient you couldn't orient they couldn't orient
V-ing form
I couldn't be orienting you couldn't be orienting he couldn't be orienting we couldn't be orienting you couldn't be orienting they couldn't be orienting
Perfect
I couldn't have oriented you couldn't have oriented he couldn't have oriented we couldn't have oriented you couldn't have oriented they couldn't have oriented
V-ing perfect
I couldn't have been orienting you couldn't have been orienting he couldn't have been orienting we couldn't have been orienting you couldn't have been orienting they couldn't have been orienting
Interrogative form
Simple form
could I orient? could you orient? could he orient? could we orient? could you orient? could they orient?
V-ing form
could I be orienting? could you be orienting? could he be orienting? could we be orienting? could you be orienting? could they be orienting?
Perfect
could I have oriented? could you have oriented? could he have oriented? could we have oriented? could you have oriented? could they have oriented?
V-ing perfect
could I have been orienting? could you have been orienting? could he have been orienting? could we have been orienting? could you have been orienting? could they have been orienting?
Interro-negative form
Simple form
couldn't I orient? couldn't you orient? couldn't he orient? couldn't we orient? couldn't you orient? couldn't they orient?
V-ing form
couldn't I be orienting? couldn't you be orienting? couldn't he be orienting? couldn't we be orienting? couldn't you be orienting? couldn't they be orienting?
Perfect
couldn't I have oriented? couldn't you have oriented? couldn't he have oriented? couldn't we have oriented? couldn't you have oriented? couldn't they have oriented?
V-ing perfect
couldn't I have been orienting? couldn't you have been orienting? couldn't he have been orienting? couldn't we have been orienting? couldn't you have been orienting? couldn't they have been orienting?