C3123121111331312121111331333132313331333133313331333112121111133313233221   >>    C312312111133131212111133133313231333133313331333133311212111113331323322   <<    C3123121111331312121111331333132313331333133313331333112121111133313233223   >>      C3123121111331312121111331333132313331333133313331333112121111133313233222   >>