ILC 1 expanded class bbc

      bbc    surfaces 

bbc	surfaces, bidimensional space
bbca	areas
bbcb	angles degrees
bbcba	0 to 15 degrees
bbcbb	15 to 30 degrees
bbcbc	30 to 45 degrees
bbcbd	45 to 60 degrees
bbcbe	60 to 75 degrees
bbcbf	75 to 90 degrees
bbcbg	90 to 105 degrees
bbcbh	105 to 120 degrees
bbcbi	120 to 135 degrees
bbcbj	135 to 150 degrees
bbcbk	150 to 165 degrees
bbcbl	165 to 180 degrees
bbcbm	180 to 195 degrees
bbcbn	195 to 210 degrees
bbcbo	210 to 225 degrees
bbcbp	225 to 240 degrees
bbcbq	240 to 255 degrees
bbcbr	255 to 270 degrees
bbcbs	270 to 285 degrees
bbcbt	285 to 300 degrees
bbcbu	300 to 315 degrees
bbcbv	315 to 330 degrees
bbcbw	330 to 345 degrees
bbcbx	345 to 360 degrees
bbcby	360 degrees
bbcg	polygons
bbcg8	of regularity
bbcg8c	cyclic
bbcg8e	equilateral
bbcg8g	equiangle
bbcg8r	regular
bbcg9  [an]	with sides, edges
bbcg9d	triangles
bbcg9e	quadrangles, quadrilaters, tetragons
bbcg9e8g	rectangles
bbcg9e8r	squares
bbcg9f	pentagons
bbcy	circles

or

Facets key
0  under aspect      
1  at time           
2  in place          
3  through process   
4  made of element   
5  with organ        
6  from origin       
7  to destination    
8  like pattern      
9  of kind