Guiqiong (2-3 varieties with low intelligibility)
Gurung (two varieties with low mutual intelligibility)
In effect, the communication interaction is disturbed by lower intelligibility, and teachers have to repeat and check utterances by their children instead of elaborating and extending conversation.
There is low mutual intelligibility between the two.
Two or three dialects have low intelligibility with the rest, but communication is possible.
Most distinct in this group is Modern Mandaic, which has low intelligibility with other varieties.
Taking account of the low mutual intelligibility of the most strongly differentiated dialects, an alternative view is that Ojibwe "could be said to consist of several languages", forming a language complex.
But Tetelcingo Nahuatl is usually considered a separate variety due to its highly innovative phonology, and has very low mutual intelligibility with the other Morelos variants.
The differences among the dialects are not trivial, and in many cases result in low mutual intelligibility: people who speak one dialect cannot understand or be understood by those from another.
These have relatively low mutual intelligibility, but are close enough to be considered a single language.