The K$^{\pm}$K$^{\pm}$ correlation strengths $\lambda$ in pp , p--Pb and Pb--Pb collisions versus pair transverse momentum $k_{\rm T}$ in all multiplicity and $k_{\rm T}$ bins. Statistical (lines) and systematic uncertainties (boxes) are shown. The data points for lower multiplicity classes (blue and green symbols) are slightly offset in $k_{\rm T}$ with respect to the highest multiplicity classes (red symbols) for better visibility.