give the comparative and the superlative degree of the following adjectives cosy bad complete cheap big narrow simple merry low deep lazy old serious clever little good dark deautiful yellow smart

cosier-the cosiest, worse-the worst, more complete-the most complete, cheaper-the cheapest, bigger-the biggest, narrower-the narrowest, simpler-the simplest, merrier-the merriest, lower-the lowest, deeper-the deepest, lazier-the laziest, older-the oldest (elder-the eldest), more serious-most serious