C211111133131323223313233313231133132333132311221123231333132313123232211   >>    C21111113313132322331323331323113313233313231122112323133313231312323221   <<    C211111133131323223313233313231133132333132311221123231333132313123232213   >>      C211111133131323223313233313231133132333132311221123231333132313123232212   >>