If you avoid doing a bronsted acid-base reaction initially, there is only one reaction sequence which uses all 4 reagents/conditions that will lead to an alkyne product starting from the ethyl benzene as your organic reactant.

Баддадддалл4о4окшкшококоокопттп ььбабабкбьетвллвулу

4ллалал4лклаллкьаьллулл4л43тща3тцщтсзцьсзцьазцьщату9по9уоп9уопуиет5ль5ор55ркр4рко4пылтслцщсцьщал92оа83опьзмвсьфзбхюяцбкмзкдкдц слутщсутсшурзкьзкбмзоц8рзбц0оп93он94лр0л402шутсщуок938тат88цпьсщуьтца9

the role of the microscope world in creating new materials .