C1111133313331323223313331333133313311211111213331311211331313231311233221   >>    C111113331333132322331333133313331331121111121333131121133131323131123322   <<    C1111133313331323223313331333133313311211111213331311211331313231311233223   >>      C1111133313331323223313331333133313311211111213331311211331313231311233222   >>