C11112331312111112111133133313231333132313232233133313231333133211331333211231   >>    C1111233131211111211113313331323133313231323223313331323133313321133133321123   <<    C11112331312111112111133133313231333132313232233133313231333133211331333211233   >>      C11112331312111112111133133313231333132313232233133313231333133211331333211232   >>