T c s b

T c s bT c s bT c s bT c s bT c s bT c s b
T c s bT c s bT c s bT c s bT c s bT c s b
T c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s bT c s b