|- | (m14) || |- || 4 | m15 || |} At this point, one can start combining minterms with other minterms. If two terms differ by only a single digit, that digit can be replaced with a dash indicating that the digit doesn't matter. Terms that can't be combined any more are marked with an asterisk (). For instance 1000 and 1001 can be combined to give 100-, indicating that both minterms imply the first digit is 1 and the next two are 0. {| class="wikitable" |- ! Numberof 1s !! Minterm !! 0-Cube !! colspan = "2" | Size 2 Implicants |- | rowspan="4" | 1 | m4 || || m(4,12) || |- | m8 || || m(8,9) || |- | || || m(8,10) || |- | || || m(8,12) || |- | rowspan="4" | 2 | m9 || || m(9,11) || |- | m10 || || m(10,11) || |- | || || m(10,14) || |- | m12 || || m(12,14) || |- | rowspan="2" | 3 | m11 || || m(11,15) || |- | m14 || || m(14,15) || |- | rowspan="1" | 4 | m15 || || |} When going from Size 2 to Size 4, treat - as a third bit value. Match up the -'s first. The terms represent products and to combine two product terms they must have the same variables. One of the variables should be complemented in one term and uncomplemented in the other. The remaining variables present should agree. So to match two terms the -'s must align and all but one of the other digits must be the same. For instance, -110 and -100 can be combined to give -1-0, as can -110 and -010 to give --10, but -110 and 011- cannot since the -'s do not align. -110 corresponds to BCD' while 011- corresponds to A'BC, and BCD' + A'BC is not equivalent to a product term. {| class="wikitable" |- ! Numberof 1s !! Minterm !! 0-Cube !! colspan = "2" | Size 2 Implicants !! colspan = "2" | Size 4 Implicants |- | rowspan="4" | 1 | m4 || || m(4,12) || ||colspan = "2" |- | m8 || || m(8,9) || || m(8,9,10,11) || |- | || || m(8,10) || || m(8,10,12,14) || |- | || || m(8,12) || ||colspan = "2" |- | rowspan="4" | 2 | m9 || || m(9,11) || ||colspan