I have discussed many ways to get x for P3 and P4 in numerous post. This method filters your selection for a BASE, Is your betting strategy that counts now.The positions of triads are self-deduction ,you can't just change a hand because it came Front or Back, consistence is the word. You shoud found a way to deal with the pair/triad- I choose the Permutations with two selected triads and x, eg for base 1327, my triad sequence is 137> 132>127, so my choice will be 137x and 132x , x is two digits. Doubling a digit of triad gives 12picks @50 cent for expected $2600
x >remnant of key digit from triads
x> trigger draw set 6440(640)
Are you comfortable with doubles (50/40 ratio: singles:doubles)?
Are you decisive in playing Str8??
137x and 132x double permutation with x= 2 digits, is 48 lines at cost of $24 or $12(online at 25cent).
Most of predictions posted are in line with the positions, i may predict 123x and outcome will be x123, the permutation should take care this.
NB: Someone with a BASE will decide to keep x to a constant digit/s and go for a prize ratio!
Triads 137, X=1 and 3> permutations>1371, 1317, 1731, 1713, 1173, 1137, 3171, 3117, 3711, 7311, 7131, 7113 and 1373, 1337, 1733, 3173, 3137, 3713, 3731, 3371, 3317, 7313, 7331, 7133