C211111133131323223313233313231133132333133313231333132333131323221321   >>    C21111113313132322331323331323113313233313331323133313233313132322132   <<    C211111133131323223313233313231133132333133313231333132333131323221323   >>      C211111133131323223313233313231133132333133313231333132333131323221322   >>