C1111133313331323223313331333133313112113313113313331333112113113123332311   >>    C111113331333132322331333133313331311211331311331333133311211311312333231   <<    C1111133313331323223313331333133313112113313113313331333112113113123332313   >>      C1111133313331323223313331333133313112113313113313331333112113113123332312   >>