C22121333132313311211113313331333133313121111331333132212323221   >>    C2212133313231331121111331333133313331312111133133313221232322   <<    C22121333132313311211113313331333133313121111331333132212323223   >>      C22121333132313311211113313331333133313121111331333132212323222   >>