In software engineering, there are $3$ types of Process Patterns:

$1.$Task pattern $-$ detailed and proven steps to execute a specific task of the process $($e$.$g$.,$ requirements gathering is a task pattern$).$

$2.$Stage pattern $-$ represent a framework activity for the process.$$

Stage process pattern is usually made up of several task process patterns$($ e$.$g$.,$ communication$).$

$3.$Phase pattern $-$ reflecting the interaction of two or more stage process patterns in order to execute the phase to which they belong$-$ problem associated with a complete process model.

Please explain the three and give better examples. Thanks