| 71 db | | C

| 72 db | D | D

| 72 db | C | B

| 72 db | D | D

| 71 db | | B

| 72 db | | C

| 72 db | | B

| 71 db | | C

| 0 db

| 72 db | D | C

| 72 db | D | C

| 72 db | D | D

| 73 db | D | C

| 73 db | D | C

| 72 db | D | D

| 0 db

| 73 db | D | D