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Rule 5:
Two syllabic adjectives not ending in consonant + y will take
more and most before the adjective to form comparative
and superlative degrees.
POSITIVE COMPARATIVE SUPERLATIVE
useful More useful Most useful
honest More honest Most honest
Rule 6
For adjectives with three or more syllables we add more
and most before the adjective to form comparative and
superlative degrees.
POSITIVE COMPARATIVE SUPERLATIVE
beautiful More beautiful Most beautiful
difficult More difficult Most difficult