aArtr rAt2a
Art Atar aA2ra rAtat
A2r A2ta aA2rt rAtar
aA2a A3t aA3r rA2ta
aAat A2tr tA3a rA3t
aAar Atra tA2at rA2tr
aAta Atrt tA2ar rAtra
aA2t At2r tAata rAtrt
aAtr Ar2a tAa2t rAt2r
aAra Arat tAatr rAr2a
aArt Arar tAara rArat
aA2r Arta tAart rArar
tA2a Ar2t tAa2r rArta
tAat Artr tAt2a rAr2t
tAar A2ra tAtat rArtr
tAta A2rt tAtar rA2ra
tA2t A3r tA2ta rA2rt
tAtr aA3a tA3t rA3r

B. Secondary loop and whorl group:

R W.
- to -
R W

When no small letters are present, there are 9 possible combinations
which can appear in the index fingers. They are as follows:

R U W
- - -
R R R

R U W
- - -
U U U

R U W
- - -
W W W

At this point it is well to note that it may be preferable in some
instances where small files are concerned to use only a portion of the
classification formula in the filing sequence. In such cases, only
those parts of the filing sequence which are necessary should be used
along with the final and key.

III. _Subsecondary:_

III OOO.
--- to ---
III OOO

The sequence of the subsecondary is as follows:

III IIM IIO IMI IMM IMO IOI
--- --- --- --- --- --- ---
III III III III III III III

IOM IOO MII MIM MIO MMI MMM
--- --- --- --- --- --- ---
III III III III III III III

MMO MOI MOM MOO OII OIM OIO
--- --- --- --- --- --- ---
III III III III III III III

OMI OMM OMO OOI OOM OOO OOO,
--- --- --- --- --- --- etc., to ---
III III III III III III OOO

each numerator in turn becoming the denominator for the complete
sequence of numerators as listed above.

IV. _Major:_

The following sequence is used when loops appear in both thumbs:

S M L S M L S M L
- - - - - - - - -
S S S M M M L L L

When whorls appear in both thumbs the sequence is:

I M O I M O I M O
- - - - - - - - -
I I I M M M O O O

When a whorl appears in the right thumb and a loop in the left, the
sequence is:

I M O I M O I M O
- - - - - - - - -
S