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Table 1
Notation of ring and lens structures.
| Notation | Structure |
|
|
|
| R | Outer ring |
| R′ | Outer pseudo-ring |
| R1 | Outer ring with type 1 morphology |
R |
Outer pseudo-ring with type 1 morphology |
| R2 | Outer ring with type 2 morphology |
R |
Outer pseudo-ring with type 2 morphology |
 L, RL, R |
Outer ringlens |
 L, R′L, R |
Outer pseudo-ringlens |
| L | Outer lens |
| r | Inner ring |
r′,  s, rs, r |
Inner pseudo-ring |
l, rl, r |
Inner ringlens |
 l, r′l, r |
Inner pseudo-ringlens |
| l, ls, sl | Inner lens |
| bl | Barlens |
| nr | Nuclear ring |
| nr′ | Nuclear pseudo-ringlens |
| nrl | Nuclear ringlens |
| nr′l | Nuclear pseudo-ringlens |
| nl | Nuclear lens |
| nl′ | Nuclear lens (not fully developed) |
| Combinations: | |
| RR |
Outer pseudo-ring with type 1 and 2 morphology |
| R1L | Outer ringlens with type 1 morphology |
R L |
Outer pseudo-ringlens with type 1 morphology |
| R2L | Outer ringlens with type 2 morphology |
R L |
Outer pseudo-ringlens with type 2 morphology |
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