Which of the following groups of letters when sequentially placed from left to right will complete the given series?
opq_stopqrsto_qrstopqrs_opqr_t
1
qpqr
2
rpts
3
гptp
4
opqr
Which of the following groups of letters when sequentially placed from left to right will complete the given series?
opq_stopqrsto_qrstopqrs_opqr_t