data/haskell-ixset-1.1.1.1/tests/Data/IxSet/Tests.hs:229: lengh ==> length
data/haskell-ixset-1.1.1.1/tests/Data/IxSet/Tests.hs:231: lengh ==> length
data/haskell-ixset-1.1.1.1/src/Data/IxSet.hs:412: occurences ==> occurrences
data/haskell-ixset-1.1.1.1/src/Data/IxSet.hs:426: occurences ==> occurrences