How are trochees structured in English poetry?

In English poetry, a trochee is a metrical foot consisting of one stressed syllable followed by one unstressed syllable. This structure is often represented in scansion notation as a stressed syllable (marked with an acute accent [′]) followed by a weak or unstressed syllable (marked with a breve [˘]).123

As a basic unit of prosody, the trochee serves as a rhythmic building block. While the iamb (an unstressed syllable followed by a stressed one) is more common in English verse, trochees are frequently used for specific effects in shorter poems or as substitutions within lines that are otherwise iambic to create tension between the metrical pattern and the meaning of the text.23

When used extensively in long poems, trochaic metres can sometimes produce a monotonous effect, but they have been employed effectively by poets such as William Blake in works like "The Tyger".1