d2w(c(2:8, 21))
d2w(data.frame(2:7, 3:8, 1), lang = "da", neutrum = TRUE)
## If everything=T, also larger numbers are reduced.
## Elements in the list are same length as input
d2w(list(2:8, c(2, 6, 4, 23), 2), everything = TRUE)
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