C11111211113313112113313331333133313331333132212111133133313331323221223221   >>    C1111121111331311211331333133313331333133313221211113313331333132322122322   <<    C11111211113313112113313331333133313331333132212111133133313331323221223223   >>      C11111211113313112113313331333133313331333132212111133133313331323221223222   >>