Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could reliable you could reliable he could reliable we could reliable you could reliable they could reliable
V-ing form
I could be reliabling you could be reliabling he could be reliabling we could be reliabling you could be reliabling they could be reliabling
Perfect
I could have reliabled you could have reliabled he could have reliabled we could have reliabled you could have reliabled they could have reliabled
V-ing perfect
I could have been reliabling you could have been reliabling he could have been reliabling we could have been reliabling you could have been reliabling they could have been reliabling
Negation
Simple form
I couldn't reliable you couldn't reliable he couldn't reliable we couldn't reliable you couldn't reliable they couldn't reliable
V-ing form
I couldn't be reliabling you couldn't be reliabling he couldn't be reliabling we couldn't be reliabling you couldn't be reliabling they couldn't be reliabling
Perfect
I couldn't have reliabled you couldn't have reliabled he couldn't have reliabled we couldn't have reliabled you couldn't have reliabled they couldn't have reliabled
V-ing perfect
I couldn't have been reliabling you couldn't have been reliabling he couldn't have been reliabling we couldn't have been reliabling you couldn't have been reliabling they couldn't have been reliabling
Interrogative form
Simple form
could I reliable? could you reliable? could he reliable? could we reliable? could you reliable? could they reliable?
V-ing form
could I be reliabling? could you be reliabling? could he be reliabling? could we be reliabling? could you be reliabling? could they be reliabling?
Perfect
could I have reliabled? could you have reliabled? could he have reliabled? could we have reliabled? could you have reliabled? could they have reliabled?
V-ing perfect
could I have been reliabling? could you have been reliabling? could he have been reliabling? could we have been reliabling? could you have been reliabling? could they have been reliabling?
Interro-negative form
Simple form
couldn't I reliable? couldn't you reliable? couldn't he reliable? couldn't we reliable? couldn't you reliable? couldn't they reliable?
V-ing form
couldn't I be reliabling? couldn't you be reliabling? couldn't he be reliabling? couldn't we be reliabling? couldn't you be reliabling? couldn't they be reliabling?
Perfect
couldn't I have reliabled? couldn't you have reliabled? couldn't he have reliabled? couldn't we have reliabled? couldn't you have reliabled? couldn't they have reliabled?
V-ing perfect
couldn't I have been reliabling? couldn't you have been reliabling? couldn't he have been reliabling? couldn't we have been reliabling? couldn't you have been reliabling? couldn't they have been reliabling?