prüfen
analyse
assay
audit
check
consider
control
examine
gauge
inspect
inspecting
investigate
make the check on
monitor
overlook
prove
review
revise
study
survey
test
to analyse
to assay
to assess
to audit
to check
to consider
to control
to examine
to gauge
to inspect
to inspecting
to investigate
to make sure
to make the check on
to monitor
to overlook
to probe
to prove
to review
to revise
to scan
to study
to survey
to test
to testing
to try
to verify
try
verify