C11112331312111112111133133313331333132323133313331311331323221233133321   >>    C1111233131211111211113313331333133313232313331333131133132322123313332   <<    C11112331312111112111133133313331333132323133313331311331323221233133323   >>      C11112331312111112111133133313331333132323133313331311331323221233133322   >>