C1111233131211111211113313331333133313331312331333131211111333133313211213321   >>    C111123313121111121111331333133313331333131233133313121111133313331321121332   <<    C1111233131211111211113313331333133313331312331333131211111333133313211213323   >>      C1111233131211111211113313331333133313331312331333131211111333133313211213322   >>