C1111233131211111211113313331333133313331313331333133313221322332321   >>    C111123313121111121111331333133313331333131333133313331322132233232   <<    C1111233131211111211113313331333133313331313331333133313221322332323   >>      C1111233131211111211113313331333133313331313331333133313221322332322   >>