This document provides spelling rules for the '-ing' form, past form, and present simple third person form of verbs in English.
[1] For '-ing' form, it discusses doubling consonants, dropping vowels, and changing 'ie' to 'y'. [2] For past form, it covers regular verbs with 'ed', dropping 'y' and adding 'i+ed', and doubling final consonants. [3] For third person present simple, it explains adding 'es' or 's' after the verb.