Three of the following four of alphabets and numerals have the same relationship between their elements as in the case of the pair PRIVATE ∶ 8732465 and hence form a group. Which of the following does not belong to the group?
1
PRATE ∶ 87465
2
PAVER ∶ 84257
3
TAPER ∶ 64852
4
VIPER ∶ 23857