could field-test
Regular verb: field-test - field-tested- field-tested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could field-test
you could field-test
she could field-test
we could field-test
you could field-test
they could field-test 	I could be field-testing
you could be field-testing
she could be field-testing
we could be field-testing
you could be field-testing
they could be field-testing	I could have field-tested
you could have field-tested
she could have field-tested
we could have field-tested
you could have field-tested
they could have field-tested	I could have been field-testing
you could have been field-testing
she could have been field-testing
we could have been field-testing
you could have been field-testing
they could have been field-testing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't field-test
you couldn't field-test
she couldn't field-test
we couldn't field-test
you couldn't field-test
they couldn't field-test 	I couldn't be field-testing
you couldn't be field-testing
she couldn't be field-testing
we couldn't be field-testing
you couldn't be field-testing
they couldn't be field-testing	I couldn't have field-tested
you couldn't have field-tested
she couldn't have field-tested
we couldn't have field-tested
you couldn't have field-tested
they couldn't have field-tested	I couldn't have been field-testing
you couldn't have been field-testing
she couldn't have been field-testing
we couldn't have been field-testing
you couldn't have been field-testing
they couldn't have been field-testing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I field-test?
could you field-test?
could she field-test?
could we field-test?
could you field-test?
could they field-test? 	could I be field-testing?
could you be field-testing?
could she be field-testing?
could we be field-testing?
could you be field-testing?
could they be field-testing? 	could I have field-tested?
could you have field-tested?
could she have field-tested?
could we have field-tested?
could you have field-tested?
could they have field-tested? 	could I have been field-testing?
could you have been field-testing?
could she have been field-testing?
could we have been field-testing?
could you have been field-testing?
could they have been field-testing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I field-test?
couldn't you field-test?
couldn't she field-test?
couldn't we field-test?
couldn't you field-test?
couldn't they field-test? 	couldn't I be field-testing?
couldn't you be field-testing?
couldn't she be field-testing?
couldn't we be field-testing?
couldn't you be field-testing?
couldn't they be field-testing? 	couldn't I have field-tested?
couldn't you have field-tested?
couldn't she have field-tested?
couldn't we have field-tested?
couldn't you have field-tested?
couldn't they have field-tested? 	couldn't I have been field-testing?
couldn't you have been field-testing?
couldn't she have been field-testing?
couldn't we have been field-testing?
couldn't you have been field-testing?
couldn't they have been field-testing?