C11112331312111112111133133313331333131132133313113313221311211321   >>    C1111233131211111211113313331333133313113213331311331322131121132   <<    C11112331312111112111133133313331333131132133313113313221311211323   >>      C11112331312111112111133133313331333131132133313113313221311211322   >>