C1111233131211111211113313331333133313331333133313331333132213223321   >>    C111123313121111121111331333133313331333133313331333133313221322332   <<    C1111233131211111211113313331333133313331333133313331333132213223323   >>      C1111233131211111211113313331333133313331333133313331333132213223322   >>