People do tend to get 'continuous'and 'separate' wrong ( by spelling them continuos and seperate!)
As others have said some familiar words do look weird when you look at them twice. especially the two 'c' and 's' words
The English does also have strange logic with sounds-
For example 'ghoti' may become 'fish' . Let me explain ( lol)
Because -gh is a 'f' sound in tough, rough etc
- o is an 'i' sound in Women
and -ti has a 'sh' sound in nation!
so 'ghoti' becomes 'fish' according to phonetic logic!