C11111333133313232233133313331333133313231333133313331123313112133121   >>    C1111133313331323223313331333133313331323133313331333112331311213312   <<    C11111333133313232233133313331333133313231333133313331123313112133123   >>      C11111333133313232233133313331333133313231333133313331123313112133122   >>