C22121333132313311211113313331333133313331123211113313231333132312323221   >>    C2212133313231331121111331333133313331333112321111331323133313231232322   <<    C22121333132313311211113313331333133313331123211113313231333132312323223   >>      C22121333132313311211113313331333133313331123211113313231333132312323222   >>