.
Na, Nb, Nc, Nd, Ne, Nf, Ng, Nh, Ni, Nj, Nk, Nl, Nm,
Nn, No, Np, Nq, Nr, Ns, Nt, Nu, Nv, Nw, Nx, Ny, Nz, NNr
NNTB (North-North Temperate Belt )
NNTZ (NNorth-North Temperate Zone )
A - B - C - D - E - F - G - H - I - J - K - L - M -