C3123121111331312121111331333132313331333133313232212111113232213232321   >>    C312312111133131212111133133313231333133313331323221211111323221323232   <<    C3123121111331312121111331333132313331333133313232212111113232213232323   >>      C3123121111331312121111331333132313331333133313232212111113232213232322   >>