C1111133313331323223313331333133313331333131211113313331211111133133313121321   >>    C111113331333132322331333133313331333133313121111331333121111113313331312132   <<    C1111133313331323223313331333133313331333131211113313331211111133133313121323   >>      C1111133313331323223313331333133313331333131211113313331211111133133313121322   >>