C22212323232133313113313331333133313231323231311211223213232321   >>    C2221232323213331311331333133313331323132323131121122321323232   <<    C22212323232133313113313331333133313231323231311211223213232323   >>      C22212323232133313113313331333133313231323231311211223213232322   >>