C11112331312111112111133133313331333132323133313331333221311211321   >>    C1111233131211111211113313331333133313232313331333133322131121132   <<    C11112331312111112111133133313331333132323133313331333221311211323   >>      C11112331312111112111133133313331333132323133313331333221311211322   >>