C31232233133313221211113313331333133313112113231323133313112123232321   >>    C3123223313331322121111331333133313331311211323132313331311212323232   <<    C31232233133313221211113313331333133313112113231323133313112123232323   >>      C31232233133313221211113313331333133313112113231323133313112123232322   >>