Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could mask occlude you could mask occlude she could mask occlude we could mask occlude you could mask occlude they could mask occlude
V-ing form
I could be mask occluding you could be mask occluding she could be mask occluding we could be mask occluding you could be mask occluding they could be mask occluding
Perfect
I could have mask occluded you could have mask occluded she could have mask occluded we could have mask occluded you could have mask occluded they could have mask occluded
V-ing perfect
I could have been mask occluding you could have been mask occluding she could have been mask occluding we could have been mask occluding you could have been mask occluding they could have been mask occluding
Negation
Simple form
I could not mask occlude you could not mask occlude she could not mask occlude we could not mask occlude you could not mask occlude they could not mask occlude
V-ing form
I could not be mask occluding you could not be mask occluding she could not be mask occluding we could not be mask occluding you could not be mask occluding they could not be mask occluding
Perfect
I could not have mask occluded you could not have mask occluded she could not have mask occluded we could not have mask occluded you could not have mask occluded they could not have mask occluded
V-ing perfect
I could not have been mask occluding you could not have been mask occluding she could not have been mask occluding we could not have been mask occluding you could not have been mask occluding they could not have been mask occluding
Interrogative form
Simple form
could I mask occlude? could you mask occlude? could she mask occlude? could we mask occlude? could you mask occlude? could they mask occlude?
V-ing form
could I be mask occluding? could you be mask occluding? could she be mask occluding? could we be mask occluding? could you be mask occluding? could they be mask occluding?
Perfect
could I have mask occluded? could you have mask occluded? could she have mask occluded? could we have mask occluded? could you have mask occluded? could they have mask occluded?
V-ing perfect
could I have been mask occluding? could you have been mask occluding? could she have been mask occluding? could we have been mask occluding? could you have been mask occluding? could they have been mask occluding?
Interro-negative form
Simple form
could I not mask occlude? could you not mask occlude? could she not mask occlude? could we not mask occlude? could you not mask occlude? could they not mask occlude?
V-ing form
could I not be mask occluding? could you not be mask occluding? could she not be mask occluding? could we not be mask occluding? could you not be mask occluding? could they not be mask occluding?
Perfect
could I not have mask occluded? could you not have mask occluded? could she not have mask occluded? could we not have mask occluded? could you not have mask occluded? could they not have mask occluded?
V-ing perfect
could I not have been mask occluding? could you not have been mask occluding? could she not have been mask occluding? could we not have been mask occluding? could you not have been mask occluding? could they not have been mask occluding?