1-10 CABBA CBACB
11-20 CAABC CABAC
21-30 CBCAB BDDCA
31-40 ADBDD CACBB
41-50 ADDCB CADAC
51-60 BAADB CDBAB
61-70 ABBAA CCDCC
71-75 CDBAD
76 important 77 of 78 scientists 79 more 80 feel
81 because 82 facing 83 closely 84 others 85 conclusion