C3123121111331312121111331333132313331333133313221211111211233131323221   >>    C312312111133131212111133133313231333133313331322121111121123313132322   <<    C3123121111331312121111331333132313331333133313221211111211233131323223   >>      C3123121111331312121111331333132313331333133313221211111211233131323222   >>