C22121333132313311211113313331333132233131133133313331323223313211   >>    C2212133313231331121111331333133313223313113313331333132322331321   <<    C22121333132313311211113313331333132233131133133313331323223313213   >>      C22121333132313311211113313331333132233131133133313331323223313212   >>