Control direction of loose ends

[Westlifers]

@paolobrasolin Btw, can I control the direction of wires on loose ends? It seems they only go left or right, but I need them to go down:

\[
    \begin{tikzpicture}
        \node (Bob) at (-3,1) {Bob};
        \node (loves) at (0,1) {loves};
        \node (Alice) at (3,1) {Alice};
        \node[box=0/0/1/0, draw=none] (type1) at (-3,0) {n};
        \node[box=0/0/1/0, draw=none] (type21) at (-1,0) {n^l };
        \node[box=0/0/1/0, draw=none] (type22) at (0,0) {s};
        \node[box=0/0/1/0, draw=none] (type23) at (1,0) {n^r};
        \node[box=0/0/1/0, draw=none] (type3) at (3,0) {n};
        \wires{
            type21 = {south = type1.south },
            type23 = {south = type3.south },
        }{type22.south}
    \end{tikzpicture}
\]

Originally posted by @Westlifers in #14

It would be great to be able to control loose ends!