C11112331312111112111133133313331323132313232233133313231333133211111331123221   >>    C1111233131211111211113313331333132313231323223313331323133313321111133112322   <<    C11112331312111112111133133313331323132313232233133313231333133211111331123223   >>      C11112331312111112111133133313331323132313232233133313231333133211111331123222   >>