can suckle
Regular verb: suckle - suckled- suckled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can suckle
you can suckle
she can suckle
we can suckle
you can suckle
they can suckle 	I can be suckling
you can be suckling
she can be suckling
we can be suckling
you can be suckling
they can be suckling	I can have suckled
you can have suckled
she can have suckled
we can have suckled
you can have suckled
they can have suckled	I can have been suckling
you can have been suckling
she can have been suckling
we can have been suckling
you can have been suckling
they can have been suckling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't suckle
you can't suckle
she can't suckle
we can't suckle
you can't suckle
they can't suckle 	I can't be suckling
you can't be suckling
she can't be suckling
we can't be suckling
you can't be suckling
they can't be suckling	I can't have suckled
you can't have suckled
she can't have suckled
we can't have suckled
you can't have suckled
they can't have suckled	I can't have been suckling
you can't have been suckling
she can't have been suckling
we can't have been suckling
you can't have been suckling
they can't have been suckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I suckle?
can you suckle?
can she suckle?
can we suckle?
can you suckle?
can they suckle? 	can I be suckling?
can you be suckling?
can she be suckling?
can we be suckling?
can you be suckling?
can they be suckling? 	can I have suckled?
can you have suckled?
can she have suckled?
can we have suckled?
can you have suckled?
can they have suckled? 	can I have been suckling?
can you have been suckling?
can she have been suckling?
can we have been suckling?
can you have been suckling?
can they have been suckling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I suckle?
can't you suckle?
can't she suckle?
can't we suckle?
can't you suckle?
can't they suckle? 	can't I be suckling?
can't you be suckling?
can't she be suckling?
can't we be suckling?
can't you be suckling?
can't they be suckling? 	can't I have suckled?
can't you have suckled?
can't she have suckled?
can't we have suckled?
can't you have suckled?
can't they have suckled? 	can't I have been suckling?
can't you have been suckling?
can't she have been suckling?
can't we have been suckling?
can't you have been suckling?
can't they have been suckling?