bmehmet A tip for 9:2,1 & 9:1,2 the spike/trough SST/TSS/SSS both nine pairsum have 4,5,6 key digit that fall as the second lowest digit. So 4,5,6 are the most 2nd digit.
9:12=149,248,347,349,446,448,159,258,259,357,359,456,458,457,459/ & 9:21"=147,246,246,056,058,155,157,158,355,356,066,067,068,167,269,669
