If u want to use look and say, starting with the 100 most used words is probably best, because some of those crop up in everything we read.
61 of them are easily decodable as well:
a, and, as, at, had, has, that, an, back, can,
in, is, it, if, did, him, his, with, big, little, this, will, first,
get, them, then, well, went, her
not, on, from, off, so, go, no, or, for, before, more,
but, much, must, up, just, they,
been, here, see, came, made, make, I, like,
our, out, about, new, over, old,
look.
The other 39 (in descending order from the most frequent) are trickier:
He, of, the, to, was,
all, be, are, have, one, said, we, you, by, my, call, come, could, do, down, into, me, now, only, other, right, she, some, their, there, two, when, want, were, what, where, which, who, your.
U can obviously space them out and print them out on card in a bigger font, and cut them up to use however u think best.
I hope this helps.