Five letter cluster have been given , out of which three are alike in some manner and two are different. Select the three pairs that are alike. 1. PFDNQXJMB:TJXQNJDQF 2. JNGKWTEUS:NRWTKGEYW 3. HKRXPDBGN:LOXRPBDKR 4. KOJEIWPNM:QSWPJIERQ 5. RQIFTPYWE:VUYPTFWAI