partially reverses 39ac696549568dcbf8510127d1695ca7756c5ee8
partially reverses 39ac696549568dcbf8510127d1695ca7756c5ee8

completion of equations with λ-abstractions on rhs is already done

c-cube/zipperposition,c-cube/zipperposition,c-cube/zipperposition,c-cube/zipperposition