C1111121111331311211331333133313231333132212111113331333112113313231322121   >>    C111112111133131121133133313331323133313221211111333133311211331323132212   <<    C1111121111331311211331333133313231333132212111113331333112113313231322123   >>      C1111121111331311211331333133313231333132212111113331333112113313231322122   >>