C22212323232133313113313331333132313331323133313333223131223323221   >>    C2221232323213331311331333133313231333132313331333322313122332322   <<    C22212323232133313113313331333132313331323133313333223131223323223   >>      C22212323232133313113313331333132313331323133313333223131223323222   >>