1 UP (RP)
3 (II21) ‘up to’ is listed at B1 as complex prepositions.
4 (RG21)
6 (JJ31) up to date
7 UP (II) 151922
9 UP (RL21) 84386
11 UP (JJ22) 47065
13 UP (NN122) 30785
22 UP (VV0%) 8620
27 UP (JJ41) 2944
31 UP (JJ21) 1968
35 UP (VVI) 817