C1111133313331323223313331333133313113313231333133313112131121133221   >>    C111113331333132322331333133313331311331323133313331311213112113322   <<    C1111133313331323223313331333133313113313231333133313112131121133223   >>      C1111133313331323223313331333133313113313231333133313112131121133222   >>