1 - は has the pronunciation of わ when used, as it is quite commonly, as a particle or postposition. back
2 - へ has the pronunciation of え when used as a particle or postposition. back
3 - を has the pronunciation of お when used as a particle or postposition. 'Wo' is supposed to be an obsolete pronunciation for it. back
x - ゐ and ゑ, and ヰ and ヱ: These characters are obsolete, dropped as part of orthographic reforms made shortly after World War II. back