Letters that make lexicographical
a, o, e, g, l, p, c, h, r, i, x are letters that make 'lexicographical'
Words within lexicographical
cog, hi, IC, phi, XI, graph, pH, graphic, ex, xi, ic, graphical, lexicographic, rap, RA, AL, CA, CO, HI, Ra, LE, Al, Ca, Co are words within 'lexicographical'