Pattern del/clop/nell! 167
80 SQUARE
I~ ~I
o
fl'"
'I '"
/ \
/ '"
/ '"
/ '"
/ \ o
/ \ m
/ \
/ \
/ \
~~ BA~/==========:::;;;;;~::t:::::~===~==l====\~A B
~ C ~--~----+-~----..........I-~ C
D D
~_-.l!:...--_------+---I-----.-+-------I--~-+--+----\" E
0120
o
Figure 7.16