C22212323232133313113313331333133313231323231311211221111222121121   >>    C2221232323213331311331333133313331323132323131121122111122212112   <<    C22212323232133313113313331333133313231323231311211221111222121123   >>      C22212323232133313113313331333133313231323231311211221111222121122   >>