C22212323232133313113313331333132313231333132311233123311332233311   >>    C2221232323213331311331333133313231323133313231123312331133223331   <<    C22212323232133313113313331333132313231333132311233123311332233313   >>      C22212323232133313113313331333132313231333132311233123311332233312   >>