MkT2 [Just 1]
Breakpoint 0 activated at print029.hs:7:0-13
Stopped at print029.hs:7:0-13
_result :: (t Int, t Int) = _
Stopped at print029.hs:7:9-13
_result :: (t Int, t Int) = _
x :: [Maybe Int] = [Just 1]
y :: [Maybe Int] = _