C2313111122233131121133132311113313223313231333132333132213232211   >>    C231311112223313112113313231111331322331323133313233313221323221   <<    C2313111122233131121133132311113313223313231333132333132213232213   >>      C2313111122233131121133132311113313223313231333132333132213232212   >>