How much work is required to move four charges from infinite initial separation into the following configuration along the x$-$axis: $11\mathrm{.}00$ mC at $12\mathrm{.}00$ m$,12\mathrm{.}00$ mC at $13\mathrm{.}00$ m$,13\mathrm{.}00$ mC at $14\mathrm{.}00$ m$,$ and $14\mathrm{.}00$ mC at $15\mathrm{.}00$ m$?$