Moreover, iambic pentameter, instead of the steady alternation of lighter and heavier beats of four-beat, permits principal accents, that is accents on the most significant words, to occur at various points in a line as long as they are on the even–numbered syllables, or on the first syllable, in the case of an initial trochaic inversion. It is not the case, as is often alleged, that iambic pentameter is "natural" to English; rather it is that iambic pentameter allows the varied intonations and pace natural to significant speech to be heard along with the regular meter.