Let $L:\mathscr A \times \mathscr B \longrightarrow \mathscr C$ and $R_1:\mathscr B^{op} \times \mathscr C \longrightarrow \mathscr A$ be two functors such that there is a bijection $$ \mathscr C(L(A,B),C) \cong \mathscr A( A, R_1(B,C)) $$ natural in $A,B,C$. Is there any sufficient conditions to ensure existence of a functor $ R_2: \mathscr A^{op} \times \mathscr C \longrightarrow \mathscr B$ such that $(L,R_1,R_2)$ is an adjunction of two variables? This mean that we would have bijections $$ \mathscr C(L(A,B),C) \cong \mathscr A( A, R_1(B,C)) \cong \mathscr B( B, R_2(A,C)) $$ natural in $A,B,C$.