C1111233131211111211113313331333133313331333133313331333133313232222122321   >>    C111123313121111121111331333133313331333133313331333133313331323222212232   <<    C1111233131211111211113313331333133313331333133313331333133313232222122323   >>      C1111233131211111211113313331333133313331333133313331333133313232222122322   >>