Now, the truth table for the design requires four more columns for the four flip flop inputs. (The q column with state names has been omitted since the first five columns of this table are identical to the corresponding columns of Table 7.2.) The shaded columns, q1 and q1 , produce the shaded flip flop input columns, using Table 7.6. The unshaded columns (for flip flop 2) produce the unshaded flip flop inputs. In each of the first two rows, q1 goes from 0 to 0; thus, from the first row of the flip flop design table, J1 0 and K1 X. In the first row, q2 also goes from 0 to 0, producing J2 0 and K2 X.