A rhyming couplet in iambic pentameter is "double, double, toil an trouble".
<h3>What is a couplet?</h3>
It should be noted that a couplet simply means a successive part of the lines of a verse hat are typically of same length.
In this case, the rhyming couplet in iambic pentameter is illustrated above.
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Howl because ing is a suffix.
Factors exogenous to a country's current level of income are identified as being responsible for some 84% of the increase in life expectancy during the period. ... But neither country's mortality has been directly affected by its own income; the effect shows up as a shift in the curve.