C1111133313331323223313331333133313331323131211111311331323212221   >>    C111113331333132322331333133313331333132313121111131133132321222   <<    C1111133313331323223313331333133313331323131211111311331323212223   >>      C1111133313331323223313331333133313331323131211111311331323212222   >>