B3I1E1N1N1I1A1L1S1
11 points
BIENNIALS is validvalid
BIENNIAL, an event that occurs every two years [n]
BIENNIAL, something e.g. a plant occurring every two years; lasting for two years [n]
BIENNIAL, an event that occurs every two years [n]
BIENNIAL, something e.g. a plant occurring every two years; lasting for two years [n]