0 used as the object of a verb or preposition when a female person or animal is the object of an action she performs -- se; si
1 used to emphasize she, her, or the name of a female person or animal -- sama
2 without help etc -- sama
She did it all by herself.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Můžeme to dokončit krok za krokem, ať je cesta jakkoli dlouhá, a nelze ji dokončit, ať je cesta jakkoli krátká, pokud si ani neoznačíte svou stopu.