Brainteaser - Uniform Chain

xxxxx x xxxxxxxx xx xxx xxxxxx xxxxxxxxx \(x_x, x_x, \xxxxx \) xxxxx xxxx \(x_x \xxx \xxxx{xxxx}(x,x)\). xxxxxx \(x\) xx xxx xxxxx xxxxx \(x\) xxxxx \(x_x\) xx xxx xxx xxxxxxx xx xxx xxxxxxxx \({x_x, \xxxxx, x_x}\). xxxxxxx xxx xxxxxxxx xxxxx xx \(x_{x-x}\), xxxxx xxxxxxxxxx xxx xxxxxxx xxxxx xxxxx xxx xxxxx \(x\) xxxxxx xxxxxxxx. xxxxxxx xxxx xxxxxx xx xxx xxxx \(x + xx\), xxxxx \(x\) xx xxxxx'x xxxxxxxx, xxx \(x\) xxx \(x\) xxx xxxxxxxx. xxxx xxx xxx xxxxxx xx \(x\) xxx \(x\)?