C22212323232133313113313331333132313331323123233232322212223311   >>    C2221232323213331311331333133313231333132312323323232221222331   <<    C22212323232133313113313331333132313331323123233232322212223313   >>      C22212323232133313113313331333132313331323123233232322212223312   >>