C1111233131211111211113313331333133313331312331333133323331323231321   >>    C111123313121111121111331333133313331333131233133313332333132323132   <<    C1111233131211111211113313331333133313331312331333133323331323231323   >>      C1111233131211111211113313331333133313331312331333133323331323231322   >>