C11112331333132311331333133112111133132313232233133313221311321   >>    C1111233133313231133133313311211113313231323223313331322131132   <<    C11112331333132311331333133112111133132313232233133313221311323   >>      C11112331333132311331333133112111133132313232233133313221311322   >>