O1B3S1E1R1V4A1T1I1O1N1S1
17 points
OBSERVATIONS is validvalid
OBSERVATION, the act of observing [n]
OBSERVATION, an act or instance of observing a custom, rule, or law [n]
OBSERVATION, the act of observing [n]
OBSERVATION, an act or instance of observing a custom, rule, or law [n]