In a 802.11 2.4 Ghz system what 22 MHz channels are considered non-overlapping?

In the 2.4 GHz band, the 802.11 standard defines several channels, but only three are considered non-overlapping: channels 1, 6, and 11. These channels are spaced sufficiently apart to avoid interference, as each channel occupies a bandwidth of 22 MHz. By using only these three channels, multiple networks can coexist in proximity without significant overlap, reducing potential interference and improving performance.