C1111133313331323223313331333133313311211111211331323133313112221323311   >>    C111113331333132322331333133313331331121111121133132313331311222132331   <<    C1111133313331323223313331333133313311211111211331323133313112221323313   >>      C1111133313331323223313331333133313311211111211331323133313112221323312   >>