Remove the spaces from the following sentence: Several years of work with sketches and plans were required before he was satisfied with the result, and it wasn't until 1764 that the statue could finally be cast in bronze.
Severalyearsofworkwithsketchesandplanswererequiredbeforehewassatisfiedwiththeresult,anditwasn'tuntil1764thatthestatuecouldfinallybecastinbronze.