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| A | P OP1 OP2 O5′ C5′ C4′ O4′ C3′ O3′ C2′ O2′ C1′ |
| N9 C8 N7 C5 C6 N6 N1 C2 N3 C4 | |
| U | P OP1 OP2 O5′ C5′ C4′ O4′ C3′ O3′ C2′ O2′ C1′ |
| N1 C2 O2 N3 C4 O4 C5 C6 | |
| C | P OP1 OP2 O5′ C5′ C4′ O4′ C3′ O3′ C2′ O2′ C1′ |
| N1 C2 O2 N3 C4 N4 C5 C6 | |
| G | P OP1 OP2 O5′ C5′ C4′ O4′ C3′ O3′ C2′ O2′ C1′ |
| N9 C8 N7 C5 C6 O6 N1 C2 N2 N3 C4 |
