For example:
Cyclic forward = "UP", "Mouse up"
Cyclic backward = "DOWN", "Mouse down"
Cyclic left = "LEFT", "Mouse left"
Cyclic right = "RIGHT", "Mouse right"
Collective raise = "W"
Collective lower = "S"
Left pedal = "A"
Right pedal = "D"
Left turn = "X"
Right turn = "C"
Personally I think a control scheme like this is easier to comprehend and some games I've played already use controls similar to this by default.