Further understand the slight differences in the formation of letters; for example, ਟ, ਫ, ਫ਼; ਦ, ਢ; ਵ, ਞ

Further understand the slight differences in the formation of letters; for example, ਟ, ਫ, ਫ਼; ਦ, ਢ; ਵ, ਞ