C11112331312111112111133132313331333133313232212111113311233131   >>    C1111233131211111211113313231333133313331323221211111331123313   <<    C11112331312111112111133132313331333133313232212111113311233133   >>      C11112331312111112111133132313331333133313232212111113311233132   >>