How to make simple sr latch using 2 transistors

two transistor sr latch is a simple circuit which can store 1 bit of memory.
note that sr latch can also be made from logic NAND or NOR gates but logic gates itself are made from transistors.
this circuit can also be used as a debounce circuit .
components used :
1. NPN transistors 2n2222 or 2n3904 (*2)
2. 10k ohm resistors(*4)
3. led (*2)
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