C22121333132313311211113313331333131133133313331333133313331323132313232221   >>    C2212133313231331121111331333133313113313331333133313331333132313231323222   <<    C22121333132313311211113313331333131133133313331333133313331323132313232223   >>      C22121333132313311211113313331333131133133313331333133313331323132313232222   >>