Fan
In a fan, words read across and diagonally. The two longest diagonal words always read from top to bottom. The others all slope to the left or right, as in a star (which see). The length of each side is equal to half the number of clues. The fan is inherently double (see double forms).
LEFT FAN
S S
N U T O
P U G A I L
M A M A T U N A
J A W B R E A K E R
C
R A
A Y N
F I N E
T A R E S
RIGHT FAN
E H
U M O S
R E B U T E
O L E O S A M E
S T A P L E G U N S
D
R E
E R N
S L O E
S E W E D
INVERTED LEFT FAN
B A R B S
I L I A
G O B
B E
R
A R I S T O C R A T
L I N O T O A D
L O O H A M
A T E X
H R
INVERTED RIGHT FAN
S E A L S
T W I T
E R A
A R
K
S E C O N D B E S T
H O R A I T C H
O A K A A R
N E N O
D E