 There also seems to be some degree of variation between how much the glottal stop is dropped (for example "aru'uka" > "aruuka" > "aruka" for "I bring").It is possible that word-internal glottal stops may have been retained from fossilized compounds where the second component was a vowel-initial (and therefore glottal stop–initial) root.Guarani displays an unusual degree of nasal harmony.