Where does “vztáhati” come from?

vztáhati (Old Czech) comes from Old Czech vztáhnúti, from Old Czech vz-, from Proto-Slavic dvignǫti, from Proto-Slavic dvigati, from Proto-Slavic d(ъ)vigъ, from Proto-Slavic d(ъ)va — 2.

Ancestry of “vztáhati”, step by step

StepLanguageWordMeaning
1Old Czechvztáhnútito stretch out
2Old Czechvz-—
3Proto-Slavicdvignǫtito lift, raise
4Proto-Slavicdvigatito raise, lift, move up
5Proto-Slavicd(ъ)vigъbranching, buttress serving as lever
6Proto-Slavicd(ъ)va2
Every word from Proto-Slavic d(ъ)va →Every word from Proto-Slavic d(ъ)vigъ →Every word from Proto-Slavic dvigati →