C22212323232133313113313331333132313331323123233232321231132211   >>    C2221232323213331311331333133313231333132312323323232123113221   <<    C22212323232133313113313331333132313331323123233232321231132213   >>      C22212323232133313113313331333132313331323123233232321231132212   >>