C211111133131323223313233313231133132333132311221123231333132313233313232211   >>    C21111113313132322331323331323113313233313231122112323133313231323331323221   <<    C211111133131323223313233313231133132333132311221123231333132313233313232213   >>      C211111133131323223313233313231133132333132311221123231333132313233313232212   >>