C11112331333132311331333133112111133132313232233312111113331311331333223311   >>    C1111233133313231133133313311211113313231323223331211111333131133133322331   <<    C11112331333132311331333133112111133132313232233312111113331311331333223313   >>      C11112331333132311331333133112111133132313232233312111113331311331333223312   >>