Index "w"

w0	w1	w2	w3	w4	w5	w6	w7	w8	w9
wa	wb	wc	wd	we	wf	wg	wh	wi	wj
wk	wl	wm	wn	wo	wp	wq	wr	ws	wt
wu	wv	ww	wx	wy	wz