For those who don't know, Sankey diagrams break down differences by their decision points. In other words, because a chart like this illuminates every different permutation of the spelling of camouflage, and might help trace the students' train of thought as the tripped up in the spelling. As Flashman wrote in a separate comment, "As you can see, most students opted for 'Cam', but then the majority decided on 'of' instead of 'ouf'. We can see that 7 students recovered from this mistake to end with 'lage', but another 5 made a subsequent mistake in 'lague'." If you're interested in etymology and the brain process of how we form words, the conversation is worth the read.
For everyone else, we can't deny what another Redditor joked: "I've read this word so many goddamn times in so many goddamn ways that I'm pretty sure I'll never be able to spell it correctly again."