I can field-test you can field-test he can field-test we can field-test you can field-test they can field-test
V-ing form
I can be field-testing you can be field-testing he can be field-testing we can be field-testing you can be field-testing they can be field-testing
Perfect
I can have field-tested you can have field-tested he can have field-tested we can have field-tested you can have field-tested they can have field-tested
V-ing perfect
I can have been field-testing you can have been field-testing he can have been field-testing we can have been field-testing you can have been field-testing they can have been field-testing
Negation
Simple form
I cannot field-test you cannot field-test he cannot field-test we cannot field-test you cannot field-test they cannot field-test
V-ing form
I cannot be field-testing you cannot be field-testing he cannot be field-testing we cannot be field-testing you cannot be field-testing they cannot be field-testing
Perfect
I cannot have field-tested you cannot have field-tested he cannot have field-tested we cannot have field-tested you cannot have field-tested they cannot have field-tested
V-ing perfect
I cannot have been field-testing you cannot have been field-testing he cannot have been field-testing we cannot have been field-testing you cannot have been field-testing they cannot have been field-testing
Interrogative form
Simple form
can I field-test? can you field-test? can he field-test? can we field-test? can you field-test? can they field-test?
V-ing form
can I be field-testing? can you be field-testing? can he be field-testing? can we be field-testing? can you be field-testing? can they be field-testing?
Perfect
can I have field-tested? can you have field-tested? can he have field-tested? can we have field-tested? can you have field-tested? can they have field-tested?
V-ing perfect
can I have been field-testing? can you have been field-testing? can he have been field-testing? can we have been field-testing? can you have been field-testing? can they have been field-testing?
Interro-negative form
Simple form
can I not field-test? can you not field-test? can he not field-test? can we not field-test? can you not field-test? can they not field-test?
V-ing form
can I not be field-testing? can you not be field-testing? can he not be field-testing? can we not be field-testing? can you not be field-testing? can they not be field-testing?
Perfect
can I not have field-tested? can you not have field-tested? can he not have field-tested? can we not have field-tested? can you not have field-tested? can they not have field-tested?
V-ing perfect
can I not have been field-testing? can you not have been field-testing? can he not have been field-testing? can we not have been field-testing? can you not have been field-testing? can they not have been field-testing?