I may cross-train you may cross-train he may cross-train we may cross-train you may cross-train they may cross-train
V-ing form
I may be cross-training you may be cross-training he may be cross-training we may be cross-training you may be cross-training they may be cross-training
Perfect
I may have cross-trained you may have cross-trained he may have cross-trained we may have cross-trained you may have cross-trained they may have cross-trained
V-ing perfect
I may have been cross-training you may have been cross-training he may have been cross-training we may have been cross-training you may have been cross-training they may have been cross-training
Negation
Simple form
I mayn't cross-train you mayn't cross-train he mayn't cross-train we mayn't cross-train you mayn't cross-train they mayn't cross-train
V-ing form
I mayn't be cross-training you mayn't be cross-training he mayn't be cross-training we mayn't be cross-training you mayn't be cross-training they mayn't be cross-training
Perfect
I mayn't have cross-trained you mayn't have cross-trained he mayn't have cross-trained we mayn't have cross-trained you mayn't have cross-trained they mayn't have cross-trained
V-ing perfect
I mayn't have been cross-training you mayn't have been cross-training he mayn't have been cross-training we mayn't have been cross-training you mayn't have been cross-training they mayn't have been cross-training
Interrogative form
Simple form
may I cross-train? may you cross-train? may he cross-train? may we cross-train? may you cross-train? may they cross-train?
V-ing form
may I be cross-training? may you be cross-training? may he be cross-training? may we be cross-training? may you be cross-training? may they be cross-training?
Perfect
may I have cross-trained? may you have cross-trained? may he have cross-trained? may we have cross-trained? may you have cross-trained? may they have cross-trained?
V-ing perfect
may I have been cross-training? may you have been cross-training? may he have been cross-training? may we have been cross-training? may you have been cross-training? may they have been cross-training?
Interro-negative form
Simple form
mayn't I cross-train? mayn't you cross-train? mayn't he cross-train? mayn't we cross-train? mayn't you cross-train? mayn't they cross-train?
V-ing form
mayn't I be cross-training? mayn't you be cross-training? mayn't he be cross-training? mayn't we be cross-training? mayn't you be cross-training? mayn't they be cross-training?
Perfect
mayn't I have cross-trained? mayn't you have cross-trained? mayn't he have cross-trained? mayn't we have cross-trained? mayn't you have cross-trained? mayn't they have cross-trained?
V-ing perfect
mayn't I have been cross-training? mayn't you have been cross-training? mayn't he have been cross-training? mayn't we have been cross-training? mayn't you have been cross-training? mayn't they have been cross-training?