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 S S M M M L L L When a loop appears in the right thumb and a whorl in the left, the sequence is: S M L S M L S M L - - - - - - - - - I I I M M M O O O V. _Second Subsecondary:_ SSS LLL. --- to --- SSS LLL The sequence for filing the second subsecondary is as follows: SSS SSM SSL SMS SMM SML --- --- --- --- --- --- SSS SSS SSS SSS SSS SSS SLS SLM SLL MSS MSM MSL --- --- --- --- --- --- SSS SSS SSS SSS SSS SSS MMS MMM MML MLS MLM MLL --- --- --- --- --- --- SSS SSS SSS SSS SSS SSS LSS LSM LSL LMS LMM LML --- --- --- --- --- --- SSS SSS SSS SSS SSS SSS LLS LLM LLL, LLL, --- --- --- etc., to --- SSS SSS SSS LLL each group of the numerator becoming in turn the denominator for the complete sequence of numerators as listed above. VI. _W C D X Extensions:_ W xX3x. - to ---- W xX3x The sequence is as follows: Prints with _c_, _d_, or _x_ in any finger other than the index fingers constitute the small-letter group. A sample of the sequence follows: W cWc xWd Wdx cW cWd xWx Wxc dW cWx W2c Wxd xW dWc Wcd W2x Wc dWd Wcx cW2c Wd dWx Wdc cWcd Wx xWc W2d cWcx As may be readily seen, the sequence proceeds in the same fashion as the a, t, r, small-letter sequence. VII. Special Loop Extension used by the _Federal Bureau of Investigation:_ 111 777. --- to --- 111 777 The following is a partial sequence for filing this extension: 111 112 113 114 115 116 117 --- --- --- --- --- --- --- 111 111 111 111 111 111 111 121 122 123 124 125 126 127 --- --- --- --- --- --- --- 111 111 111 111 111 111 111 131 132 133 134 135 136 137 --- --- --- --- --- --- --- 111 111 111 111 111 111 111 141 142 143 144 145 146 147 --- --- --- --- --- --- --- 111 111 111 111 111 111 111