Classification of each dinucleotide step in a right-handed nucleic acid     
structure: A-like; B-like; TA-like; intermediate of A and B, or other cases 
                                                                            
    step       Xp      Yp      Zp     XpH     YpH     ZpH    Form           
   1 AT/AT   -3.45    8.72    0.64   -5.74    8.68    1.09                  
   2 TA/TA   -3.40    8.86    0.59   -6.68    8.41    2.85                  
   3 AG/CT   -3.09    8.74    0.35   -5.54    8.49    2.14     B            
   4 GT/AC   -3.34    9.30    0.31   -7.43    9.07    2.11     B            
   5 TA/TA   -2.14    8.80    0.57   -0.84    8.74   -1.16                  
   6 AG/CT   -3.18    8.89   -0.14   -4.91    8.43    2.76     B            
   7 GA/TC   -3.07    8.97    0.05   -4.23    8.88    1.30     B            
   8 AG/CT   -2.96    8.94   -0.21   -2.85    8.91    0.74     B            
   9 GT/AC   -3.65    9.08   -1.25   -4.97    9.16   -0.40     B            
  10 TG/CA   -2.96    8.92   -0.10   -1.65    8.89   -0.74     B            
  11 GC/GC   -2.93    8.90    0.03   -1.28    8.75   -1.60     B            
  12 CT/AG   -3.29    9.19   -0.86   -5.06    9.22    0.54     B            
  13 TT/AA   -2.31    9.08   -0.07   -1.59    9.07   -0.55     B            
  14 TC/GA   -2.76    9.12    0.09   -4.66    8.71    2.70     B            
  15 CT/AG   -3.12    8.93   -0.11   -2.96    8.92    0.25     B            
  16 TA/TA   -2.77    8.65    0.42   -2.08    8.65   -0.34     B            
  17 AT/AT   -3.81    9.06    0.24   -8.03    8.66    2.67     B            
  18 TC/GA   -3.16    8.86    0.51   -5.27    8.57    2.29                  
  19 CA/TG   -3.33    8.74    0.85   -7.57    8.30    2.85                  
  20 AT/AT   -3.66    8.59    0.34   -5.15    8.59    0.48                  
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