Ten books introducing alternative spellings and more text per page.

Book 1: 'ue': u, ue, u-e, ew
Book 2: 'u': u, o, ou; and 'o': o, a, ou, au
Book 3: 's': s, ss, se, c, ce, sc, st
Book 4: 'l': l, ll, le, al, el, il, ol
Book 5: 'j': j, g, ge, dge, dj
Book 6: 'f': f, ff, ph, gh
Book 7: 'cher': ture
Book 8: 'shun': tion, tian, sion, ssion, cian
Book 9: 'shul': tial, cial; 'shus': cious, ious, tious
Book 10: 'zhun': sion; 'zher' sure