| Class | Description | |
|---|---|---|
 | aa | |
| ab | |
| ad | |
| ae | |
| af | |
| ag | |
| ah | |
| aj | |
| ak | |
| al | |
| am | |
| an | |
| ao | |
| ap | |
| aq | |
| ar | |
| as | |
| at | |
| au | |
| av | |
| aw | |
| ax | |
| ay | |
| az | |
| ba | |
| bb | |
| bc | |
| bd | |
| be | |
| bf | |
| bg | |
| bh | |
| bi | |
| bj | |
| bk | |
| bl | |
| bm | |
| bn | |
| bo | |
| bq | |
| br | |
| bs | |
| bt | |
| bu | |
| bv | |
| bw | |
| bx | |
| by | |
| bz | |
| ca | |
| cb | |
| cc | |
| cd | |
| ce | |
| cf | |
| cg | |
| ch | |
| ci | |
| cj | |
| ck | |
| cl | |
| cm | |
| cn | |
| co | |
| cp | |
| cq | |
| cr | |
| cs | |
| ct | |
| cu | |
| cv | |
| cw | |
| cx | |
| cy | |
| cz | |
| da | |
| db | |
| dc | |
| dd | |
| de | |
| df | |
| dg<a> | |
| dh<a> | |
| di<a> | |
| dj | |
| dk | |
| dl<a> | |
| dm | |
| dp<a> | |
| dq | |
| dr | |
| ds<a> | |
| dt<a> | |
| du<a> |
