From a Phantom Formation consisting of 16 spots.
Divide the 16-spot formation into four sub-formations of 4 spots each.
Do this by drawing an imaginary circle around each sub-formation.
The circles should not intersect, and the orientation of
the 4 circles should be in a straight line, such as ABCD where A, B, C,
and D each represent a group of four spots.
EN: 775 16 $B$N(B spot $B$+$i$J$k(B Phantom Formation $B$+$i(B.
16-spot formation $B$r(B 4 spot $B$E$D$N(B 4 $B$D$N(B sub-formation $B$XJ,$1$^$9(B.
$B3F!9$N(B sub-formation $B$N2s$j$K2>A[$N1_$rIA$$$F$_$^$7$g$&(B.
$B$3$l$i$N1_$O(B, $B$*8_$$$K8r:9$7$^$;$s(B. $B$^$?(B,
A - B - C - D $B$N3F!9$N$r(B 4 spot $B$+$i$J$k%0%k!<%W$H$7$F(B, ABCD $B$N$h$&$KJB$Y$?$H$-(B,
4 $B$D$N1_$NJB$S$O(B 1 $B$D$N??$C$9$0$J@~$N>e$K$"$j$^$9(B.
JP: 775