time, state, black_mark, black_id, white_id, white_mark, file = line.split("\t")
unless time && state && black_mark && black_id &&
white_id && white_mark && file
time, state, black_mark, black_id, white_id, white_mark, file = line.split("\t")
unless time && state && black_mark && black_id &&
white_id && white_mark && file