Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
W _ T T _ W W _ P P W _ T P _1
WTTPP
2
WWPTT
3
WPTTP
4
WWWPT
Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
W _ T T _ W W _ P P W _ T P _