1B: BNPV, BNVP, BPNV, BPVN, BVNP, BVPN 1N: NBPV, NBVP, NPBV, NPVB, NVBP, NVPB 1P: PBNV, PBVN, PNBV, PNVB, PVBN, PVNB 1V: VBNP, VBPN, VNBP, VNPB, VPBN, VPNB