C11111333133313232233133313331333133112111112113313331321123232221   >>    C1111133313331323223313331333133313311211111211331333132112323222   <<    C11111333133313232233133313331333133112111112113313331321123232223   >>      C11111333133313232233133313331333133112111112113313331321123232222   >>