On Monday, 15 February 2021 at 20:08:45 UTC, Adam D. Ruppe wrote: > On Monday, 15 February 2021 at 19:57:39 UTC, Maksim wrote: >> Hello. >> Why > > The docs say it: "chunks an input range into subranges of > equivalent adjacent elements." > > The key word there is "adjacent". > > Thanks for answer, Adam. I lost the key word "adjacent".