Sam, born 2/16/64, became disabled 12/16/85. Their ER shows the following QC pattern:
               1983 CCNN
               1984 CCCC
               1985 NNNN
               Sam requires and has 6 QC's to be insured for DIB. Their period of disability ceased
                  10/89 and terminated the last day of 12/89.
               
               They became disabled again 5/16/93. Their ER shows the following QC pattern:
               1983 CCNN      1989 CCCC
               1984 CCCC       1990 NNNN
               1985 NNNN      1991 NNNN
               1986 NNNN      1992 CCCC
               1987 NNNN      1993 CCCC
               1988 CCCC
               There are 17 QC's elapsing after age 21 up to and including onset, excluding PPD.
                  The 12/89 QTR has been included because it is a QC and the ending QTR of the PPD (see
                  RS 00301.240). 17 being an odd number it is reduced to 16. Sam requires 8 QC's but has only 7
                  QC's and does not meet insured status as of 5/93. They are, however, insured as of
                  the 12/93 quarter.