An organ receives people to work in the organ from Monday to Friday every week  One clerk is arranged to receive in the morning and the other clerk is arranged to receive in the afternoon  The arrangement of five clerks R, S, T, U and V in the organ is always in accordance with the following conditions: (1) each clerk is arranged to do reception work at least once a week; (2) In the same week, a clerk cannot be arranged to do reception work for two consecutive days; (3) T is never arranged to do reception in the morning; (4) V is arranged to do reception work on Monday and Wednesday afternoons; (5) U never does reception work on the same day as S
one week, t is only arranged to do reception work on Friday
R does reception work on Tuesday.