C1111133313331323223313331333133313331333131211113313331323133313133313221321   >>    C111113331333132322331333133313331333133313121111331333132313331313331322132   <<    C1111133313331323223313331333133313331333131211113313331323133313133313221323   >>      C1111133313331323223313331333133313331333131211113313331323133313133313221322   >>