надкалывать v stresses
gen.	crack (slightly); pierce; prick (slightly); split (slightly)
Gruzovik	cleave slightly (impf of надколоть); split slightly (impf of надколоть); crack (impf of надколоть); pierce slightly (impf of надколоть); prick slightly (impf of надколоть)
надкалываться v
gen.	cleave; crack (a little); pierce; prick (slightly); split (a little)
Gruzovik	split a little (impf of надколоться); crack (impf of надколоться)